Let the unknown number be x: 13x-119 = 3x-9 13x-3x = -9+119 10x = 110 x = 11 Substituting the value of x into original equation: 24 = 24
it is the same thing
it makes it eaiser to add subtract or divide or multiply
The sign changes if you multiply/divide by a negative number. It stays the same if you add/subtract by a negative number.
5x + 22 = 2x + 76Subtract 2x from each side:3x + 22 = 76Subtract 22 from each side:3x = 54Divide each side by 3:x = 18
Change the whole number into an improper fraction with the same denominator as the fraction and then subtract accordingly
First, to subtract fractions, you need to make sure that the both have a common denominator. By this, I mean that they need to have the same number on the bottom of the fraction. If they are not the same, you need to multiply. Say you had this problem: 4/5 - 1/3 You will notice they don't have a common denominator. To make sure that the bottom is the same number, multiply 4/5 by 3 and 1/3 by 5. When you multiply, you do this to both the top and the bottom number. The problem now looks like this: 12/15 - 5/15 Now you're ready to subtract! All you have to do is subtract the top numbers, and keep the bottom ones the same. So: 4/5 - 1/3 = 7/15
It is called algebra. When two quantities are related as long as you do the same operation to both (add, subtract, multiply, or divide) you do not change the relation
you multiply 27 times a number then you multiply 18 times a different number and see if they come out with the same answer.
Scaling is when you multiply or divide two quantities by the same number.
You multiply or divide the first quantity by the number and then you do the same for the other quantity.
You can add, subtract, multiply, or divide both sides of the equation or inequality by the same number. Don't multiply or divide by zero. In the case of an inequality, if you multiply or divide by a negative number, the sign of the inequality must be reversed. E.g., if you multiply both sides by -2, a "less-than" sign should be replaced by a "greater-than" sign.
Suppose the number is x. Then 7x = 2x + 20 Subtract 2x from both sides: 5x = 20 Divide both sides by 5: x = 4
Pick a number between 8 and 20. double that number. subtract 16 from that answer. Multiply that result by 4. Divide that total by 8. add 15 to that answer. subtract the number that you started with.
The sAme you started with.
five digits number when you multiply by four is the same the number when you reversed it is 21978*4 = 87912
It is possible.
Multiply the denominators to equal numbers, then multiply by the same number for the numerator. Then solve.
When you multiply a number by 1, you get the same number back. Ex. 10x1=10
If the two bottom numbers are the same, you will carry that same number over to the denominator in the answer. To get the numerator (top number) simply subtract the two numerator and place the number over the answer denominator.
When you multiply a number by 1, it stays the same. When you multiply a number by a number greater than 1, it increases. When you multiply a number by a number that is less than 1 (a proper fraction), it decreases.
Each time you subtract zero you will begin and end with the same number - ie, the original amount.