7(5 + 9) = 7 ? x + 7 * 9
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
What do you find so difficult about this? To get rid of the bracket in the left, you just multiply like this:
(7 X 5) + (7 X 9), now can you see the answer? It is obviously "B", or x=5.
