Solve the system of equations. x + 3y = −1 2x + 2y = 6

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Solve the system of equations. x + 3y = −1 2x + 2y = 6

Mathematics
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You can solve it by elimination
double the top equation so 2x+6y=-2 now subtract the second equation from that to only have y in the equation and solve for y, then apply the y value to any of the first 2 equations to solve for x.
You can divide the second equation by -2 x cancels and you have y= -4 plug in y to find x

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and you have solved through elimination
Thats new, I don't think I have actually ever used division for elimination in simultaneous equations *-*
division is just multiplying by a reciprocal.
When I noticed that I become a lot faster in arithmetic, breaking down numbers into its factors for easier mental maths

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