3 years ago

X+y=-3 y=2x Solve the linear equation

2 answers:

5 0

X + y = -3
y = 2x

x + y = -3
plug in 2x for y

x + 2x = -3
combine like terms

3x = -3
divide both sides by 3 to isolate x

x = -1

4 0

X+Y=-3, Y=2X, so
X+2X=-3
3X=-3 | /3
X=-1

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