I would triple the first one:
15x + 6y = 66
-2x + 6y = 3
subtract them:
17x = 63
x = 63/17
back into original first:
5(63/17) + 2y = 22
2y = 59/17
y = 59/34
check them in the original equations, it works
solve the following system of equations enter the x coordinate of the solution. Round your answer to the nearest tenth. 5x+2y=22 -2x+6y=3
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