SOLUTION: The sum of a number and 9 is multiplied by -2 and the answer is -8. Write and solve an equation to find the number.

Question 1170180: The sum of a number and 9 is multiplied by -2 and the answer is -8. Write and solve an equation to find the number.
Answer by math_helper(2461) (Show Source): You can put this solution on YOUR website!

x is "the number"

"The sum of a number and 9" is

"...multiplied by -2"

"...equals -8"

To solve this means to isolate x on one side (then the other side is 'the number').
Divide both sides by -2:

Subtract 9 from both sides:

Check: -2(-5+9) = -2(4) = -8 (ok)

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