Evaluate.
8 x 7 = (
x 7) + (3 x 7)
=
+ 21
11

5

35

56

Step-by-step explanation:

8 x 7 = 56

Subtract 21 (3x7) from 56 (8x7) to get 35

Divide 35 by the given value 7 to get 5

5 x 7 = 35

35 + 21 = 56

need more info

step-by-step explanation:

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk