-3x-5y=-17
How Do I Solve By Substitution 3x +y = -8 -2x -y = 6?
Y=3x+6
y=4x
y=4x
You have here two equations
equation 1 >>> 3x+y = 6
equation 2 >>> -8-2x-y=6
Taking equation 1 >>> 3x+y = 6
>>> y = 6-3x -- equation 3
put the value of y in equation 2
>>> -8-2x-(6-3x)=6
>>> -8-2x-6+3x=6
>>> -14+x=6
>>> x=6+14
>>> x=20
now put the value of x in equation 3.
Equation 3 >>> y=6-3x
y = 6-3 (20)
y = -54
equation 1 >>> 3x+y = 6
equation 2 >>> -8-2x-y=6
Taking equation 1 >>> 3x+y = 6
>>> y = 6-3x -- equation 3
put the value of y in equation 2
>>> -8-2x-(6-3x)=6
>>> -8-2x-6+3x=6
>>> -14+x=6
>>> x=6+14
>>> x=20
now put the value of x in equation 3.
Equation 3 >>> y=6-3x
y = 6-3 (20)
y = -54