Question

7 x 5 = (___ x 2) + (7 x 3)

Answer 1

7

Explanation:

7 * 5 = (x * 2) + (7*3)

1. Multiply 7 and 5 to know what you need to equal

2. muliply 7 and 3 to see how much you are adding

`35= (x*2)+21`

3. subtract 21 on both sides

`35-21=(x*2) +21-21\\14=x*2`

4. divide 14 by 2.

if you don't know how to divide...

1*2=2

2*2

2*3

2*4

2*5

2*6

2*7

Goes up by 2, add 2

*=mulitply

x=blank or variable