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To eradicate the denominators.

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Q: If all of the coefficient and constants in an equation are fractions what should your first step be?
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Which coefficient should be placed in front of PCl3 to balance this equation?

4


A number placed in front of a chemical formula in a chemical equation is called?

In a chemical Equation ,The reactants are on the left side of a chemical equation and the products are on the right side.The number in front of a chemical formula in a chemical equation is called atoms. They should be a balancing number on both the sides.


In solving a fraction equation John added the numerators of several fractions with unlike denominators. What should John have done first?

John should have first found the lowest common denominator of the given fractions.


When should you use the addition property of equality to eliminate one variable in a system of equation?

When the coefficient of that variable, in which you want to eliminate, is negative.


How can you recognize the slope intercept form of an equation?

If you solve for y with no coefficient, you should have an equation in the form of y = mx + b, where m is the slope and b is the y intercept.


What is the first thing you should look for when factoring?

Is the coefficient of the square a prime number? eg if the equation begins 3a2 then the factors must be (3a +/- x)(a +/- y)


When balancing equations should you adjust the subscripts or the coefficients?

Subscripts state how many atoms and Coefficients state how many molecules there are. So when balancing an equation you always adjust the coefficients. When this equation is balanced, what is the coefficient for Ni(NOËÄ)ËÄ? 4


How do you solve an equation with algebraic expression?

We need to perform two steps to solve these kind of equations.We perform the opposite of operations involved in the equation.We should get the variable on one side of '=' and constants on the other side.The variable should have 1 as coefficient.Mostly addition or subtraction will be first step. It depends upon the type of equation we solve.Then we may have to perform multiplication or division operations.Example:3x + 4 = 311) Add -4 on both the sides of the equation to eliminate 4 from the left hand side of '='. We get,3x = 272) Divide both the sides of the equation by 3 to get x with coefficient 1. We get,x = 9.


Should all improper fractions be converted to mixed fractions?

Yes they should


How do you make t the subject of this equation xwat?

If xwat are variables or constants that are multiplied together, divide each side of the equation by the non-"t" ones to arrive at a "t=" equation. For example, if the equation is xwat = 1, then t = 1/xwa. If there should have been + or - operations in the equation, reverse those first, before doing any multiplying or dividing. Perform the same operations on both sides of the equation. For example, if the equation were xw+at = 1, then at = 1 - xw, then t = (1-xw)/a.


When identifying a coefficient do you include the variable?

Yes, you should generally include the variables when identifying a coefficient.


What is the relationship between the coefficient of a number in scientific notation and the number of significant figures?

The number of digits in the coefficient should be exactly the same as the number of significant figures.