Question

Solve by using substitution. x+2y=−1 x=y+5

Answer 1

y = -2

x = 3

Explanation:

y + 5 + 2y = -1 (substitute)

3y + 5 = -1 (Simplify)

3y = -6 (Get rid of 5)

y = -2 (Divide)

x = -2 + 5 (plug in y)

x = 3 (simplify)

hope this helps :)

Answer 2

Explanation:

the first equation we konw x=-2y-1,

then -2y-1=y+5

so, y = -2, x=3