Question 238689
6x+2y-4=0 --> 6x+2y = 4 --> 3x+y = 2
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3x + y = 2 eqn 1
10x+7y = -8 eqn 2
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Get the same coefficient for one of the variables.  Since y's coeff is 1 in eqn 1, do it.
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21x + 7y = 14  eqn 1 times 7
10x + 7y = -8
-------------- Subtract
11x = 22
x = 2
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Sub for x into eqn 1
3*2 + y = 14
y = 8
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