5-4x=12-2x
isolate your x's on one side
5=12-2x+4x
5-12=-2x+4x
simplify
-7=2x
divide by 2
x=-7/2, or x=-3.5
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122x = 28Divide each side by 122:x = 28/122 = 0.22951 (rounded)
The "answer" is a pair of numbers that, if you put one of them in place of 'x' and the other one in place of 'y', then the statement "-3y = -54x + 18" is true. There are an infinite number of different correct "answers".
6x + 54x -9 = 60x - 9
It's not something that can have a SOLUTION unless it EQUALS something. x + 53x = 54x. Does 54x = 1? Then x = 1/54. Does 54x = 108? Then x = 2. etc.
2x - 10 = 44 + 8x2x = 54 + 8x-6x = 54x = -9