Question

4x-2y=7 método igualación 3x+6y=3

Answer 1

4x-2y=7
3x+6y=3
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3(4x-2y=7)
3x+6y=3
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12x-6y=21
3x+6y=3
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15x=24
x=24/15
reemplazando
4x-2y=7
4(24/15)-2y=7
48/15-2y=7
48/15-7=2y
(48-15*7)/15=2y
2(-57/15)=y
-154/15=y