Question

What is the solution to the equation?

7(5 + 9) = 7 · x + 7 · 9
A. x = 1
B. x = 5
C. x = 7
D. x = 9

@iGreen @iGreen. @sleepyjess

Answer 1

Substitute in the options for x and see which one works out.

Answer 2

Well the first part of the equation 7(5+9)=98.

For the 2nd part, 7 times 9 is 63,

98-63=35

7 times what is 35?

Answer 3

OR
7(5+9)=7*5+7*9
35+63=7*x+7*9
98=7x+63

Answer 4

In case you want to check your answer it would be B. x = 5

Answer 5

7*9 from both sides cancels out and simply 7x=7*5 or x=5