Question

What is the solution to the equation?

5(8 + 7) = 5 * x + 5 * 7

A. x = 1

B. x = 5

C. x = 7

D. x = 8

Answer 1

first step is to eliminate the ( )

can you distribute the 5 in this part?
5(8+7)

Answer 2

Sure! 5*8+7 is that right or is that Order of Operations. I can't remember.

Answer 3

use pemdas.. order of operations

Answer 4

Ok

Answer 5

5(8+7) = (5)8 + (5)7

so now we have
(5)8 + (5)7 = 5 * x + 5 * 7

what do you think we should do next?

Answer 6

I am trying to think, but I can't remember.

Answer 7

lets 'isolate' the x term. so on the right hand side, we have +5*7, how can we get that to the other side of the equal sign?

Answer 8

hmmmm...

Answer 9

subtract -(5*7) from both sides.
what does your equation look like now?

Answer 10

You may think I am stupid, but I seriously don't know. :(

Answer 11

it's ok!

Answer 12

youre not dumb, you just haven't learned yet.