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Solve: Use Substitution
8x + 4y = 12
y = -2x + 3


Please help me!

1 Answer

5 votes

Answer:

(x,y) =(3/14,3/14)

Explanation:

8x+ 4y=-2x+3 WRITE AS SYSTEM OFEQUATIONS

12y=-2x=3 simplify expressions

10x +4y =3

2x+12y=3 .......multiply both sides of the equation by -5

10x +4y=3

-10x -60= -15 sum both equations to eliminate a variable (10x cancels

and 3+-5 +-12

-56y= -12 divide both side by -56

y=3/14

2x+12x3/14=3 substitute the given value of y into the equation

x=3/14

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