x - 8x = 1
Perform the indicated subtraction on the left side:
-7x = 1
Divide each side of the equation by -7 :
x = - 1/7
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solution: y = 0 x = -1
No. -4 does not equal -2(1).
Not sure what you mean; that equation certainly has a solution.
(-2,-1)
There is one solution for x and one solution for y. The solution is: x = -1 ; y = 2