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Sagot :
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Answer:
x = 8
y = 9
Step-by-step explanation:
x - y = -1
Add y to both sides to get x by itself:
x = -1 + y
3(-1 + y) - 2y = 6
-3 + 3y - 2y = 6
-3 + y = 6
y = 9
x - 9 = -1
x = 8
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