Question

Solve the system of equations.

x + 3y = −1
2x + 2y = 6

Answer 1

You can solve it by elimination

Answer 2

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.

Answer 3

You can divide the second equation by -2
x cancels and you have
y= -4
plug in y to find x

Answer 4

and you have solved through elimination

Answer 5

Thats new, I don't think I have actually ever used division for elimination in simultaneous equations *-*

Answer 6

division is just multiplying by a reciprocal.

Answer 7

When I noticed that I become a lot faster in arithmetic, breaking down numbers into its factors for easier mental maths