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X + 2y = 7 3x - 2y = -3
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Jul 5, 2019
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X + 2y = 7
3x - 2y = -3
Mathematics
middle-school
Ernest S Kirubakaran
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Ernest S Kirubakaran
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Use Subtraction
1. Subtract
x+2y=7
3x-2y=-3
-------------
4x+0y=4 SIMPLIFY 4x=4
2. DIVIDE
4x=4
x=1
Substitute that into either of the original equations to get x=1, y=3
Detuned
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Jul 11, 2019
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Detuned
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