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Solve each system using the substitution method 6x-y=-4 and 2x+2y=15
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Jun 3, 2021
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Solve each system using the substitution method 6x-y=-4 and 2x+2y=15
Mathematics
high-school
Andrei Filonov
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Andrei Filonov
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Convert 6x - y = -4 into y = mx + b
Y - 4 = 6x
Y = 6x + 4
Substitute that into second equation
2x + 2(6x + 4) = 15
2x + 12x + 8 = 15
14x = 7
X = 1/2
6(1/2) - y = -4
3 - y = -4
-y = -7, y = 7
Final answer: x = 1/2, y = 7
Pylanglois
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Jun 9, 2021
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Pylanglois
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