Respuesta :

7x-4=31 x=5  7(5)-4= 35-4= 31
4y+8=24 y =4 4(4)=8= 16+8=24

merlynthewhizz
The side that has length 24 equals to 4y + 8

24 = 4y + 8
24 - 8 = 4y
16 = 4y
y= 16÷4
y = 4

The side that has length 31 equals to 7x - 4

7x - 4 = 31
7x = 31 + 4
7x = 35
x = 35 ÷ 7
x = 5