1 year ago

Solve each equation x+2y=1 and -x+y=2

Mathematics

1 answer:

Rudiy271 year ago

6 0

Answer:

x = -1, y = 1

Step-by-step explanation:

x + 2y = 1

Subtract 2y from both sides

x + 2y - 2y = 1 - 2y (simplify) -> x= 1 - 2y

----

-x + y = 2

Subtract y from both sides

-x + y - y + 2 - y (simplify) -> -x = 2 - y

Divide both sides by -1

$\frac{-x}{-1}$ = $\frac{2}{-1}$ - $\frac{y}{-1}$ (simplify) -> x = -2 + y

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