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Solve the simultaneous equations 3x+y=172 x+y=12​
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Solve the simultaneous equations 3x+y=172 x+y=12​

User Arbulgazar
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1 Answer

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Answer:

(x, y) = (80, -68)

Explanation:

Subtract the second equation from the first.

(3x +y) -(x +y) = (172) -(12)

2x = 160 . . . . . . . . . simplify

x = 80 . . . . . . . . . divide by 2

y = 12 -x = 12 -80 = -68 . . . . . find y from the second equation

The solution is (x, y) = (80, -68).

Solve the simultaneous equations 3x+y=172 x+y=12​-example-1
User Leigha
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