Question

Solve each system by substitution method. X=2y+11 7x+2y=13

Answer 1

Step-by-step explanation:

you need to substitute the x in (7x +2y=13) with (x=2y+11) to solve it

Answer 2

$y = - 4$

Step by step explanation:

Equation 1:

$x = 2y + 11$

Equation 2:

$7x + 2y = 13$

Put the value of X from equation 1 into equation 2.

$7(2y + 11) + 2y = 13$

Solve the brackets.

$14y + 77 + 2y = 13$

Simplify.

$16y + 77 = 13$

Send 77 to the other side.

$16y= 13 - 77$

$16y = - 64$

Send 16 to the other side.

$y = - \frac{64}{16}$

Answer:

$y = - 4$

Hope this helped!