Solve by substitution. show each step of your work. 5x + y = 15 3x + 2y = 16

Given equations are 5x + y = 15 and 3x + 2y = 16.

Solving first equation in the form y=mx+b,

5x + y = 15

y = -5x + 15

Substituting y= -5x+15 from first equation into second equation :-

3x + 2y = 16

3x + 2·(-5x + 15) = 16

3x - 10x + 30 = 16

-7x + 30 = 16

7x = 30 - 16 = 14

x = 2

Substituting x=2 into first equation :-

5x + y = 15

5(2) + y = 15

10 + y = 15

y = 15 - 10

y = 5

So final answers are x=2, y=5.

7

step-by-step explanation:

the answer would be 7

d. corresponding side lengths in similar triangles are proportional in length.

step-by-step explanation: