Y=-2x+6 3y-x+3=0 solving systems using substitution

You can "plug in" the value for y from the top eq in the bottom one:

3(-2x+6) - x + 3 = 0

Simplify:

-6x + 18 - x + 3 = 0

-7x + 21 = 0

-7x = -21

x = 3

y = -2*3+6 = 0

i'm not sure i quite understand, could you provide more information?

step-by-step explanation:

i think you should think about the question and not look online.