You can replace a variable with an equal value or expression. Just make sure the same variable always gets the same value or expression.
False X4
Expressions cannot be solved. Only equations or inequalities may be solved. Also, there is no symbol between 3i and 5.
In algebraic terms, the expression "2p + 3q" represents the sum of two terms: 2 times the variable "p" and 3 times the variable "q." To simplify this expression, you can combine like terms by adding the coefficients of "p" and "q" together. Therefore, the simplified form of "2p + 3q" is typically written as "2p + 3q" as it cannot be further simplified without additional context or values assigned to "p" and "q."
25
No, expressions do not have equal signs. Equations do, though. You can think of it like this: Equtions have EQUAl signs, while expressions do not.No, an expression cannot have an equal sign. If it were to have an equal sign, it would then be an equation.
The expression (-5y - 2525) represents a linear expression in terms of the variable (y). It consists of two terms: (-5y), which is a variable term, and (-2525), which is a constant term. This expression can be simplified or evaluated for specific values of (y), but it cannot be simplified further without additional context or equations.
The question is about an oxymoronic expression. A constant cannot be a variable and a variable cannot be a constant!
10
No, you can only simplify an expression. To solve for a variable, it must be in an equation.
It is a linear expression in two variables. As an expression it cannot be solved. Furthermore, to solve equations in two variables you need at least two linear equations.
neither, an independent variable is a variable not being changed in the process of a science experiment. A variable in math cannot be described, only purpose of a variable is to take place of a number that you are trying to figure out in some equations. Others are equations with no solution.
False X4
An expression cannot be solved; an equation or an inequality may be.
You cannot work a simultaneous equation. You require a system of equations. How you solve them depends on their nature: two or more linear equations are relatively easy to solve by eliminating variables - one at a time and then substituting these values in the earlier equations. For systems of equations containing non-linear equations it is simpler to substitute for variable expression for one of the variables at the start and working towards the other variable(s).
There is, unfortunately, n equation in the question: only an expression. An expression cannot be solved for a variable.
You cannot because the expression still contains the unknown variable y.
You will apply them when solving quadratic equations in which the quadratic expression cannot be factorised.