Help me out please i will reward u with 100 points

He

Step-by-step explanation:

15y : 15 x 3 = 45

xy :  2 x 3 = 6

y + 23 : 23 + 3 = 26

5x + 9 : 5 x 2 = 10 + 9 = 19

6x - 2 : 6 x 2 = 12 - 4 = 8

yz : 3 x 4 = 12

y + 12 : 3 + 12 = 15

2z - 7 : 2 x 4 = 8 - 7 = 1

9x + y : 9 x 2 = 18 + 3 = 21

6x + 12 : 12 + 12 = 24

xz + 4 : 2 x 4 = 8 + 4 = 12

5x + 6z = 10 - 24 = -14

Step-by-step explanation:

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation:

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right