3x - y = 12 is the same as 3x - 12 = y, or y = 3x - 12.
3x + 12 = 42 3x = 30 x = 10
If you mean: 3x+12 then it is 3(x+4) when factorized
3x+12=x+48: 3x-x=-12+48 2x=36 x=18
6x - 12 = 3x + 15 3x = 27 x = 9
fx=3x-5 f=(3x-5)/x f2=(6x-10)/x /=divide
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17
Just replace x by 4 in the formula. 3(4) - 2 = 12-2 = 10.
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3x - y = 12 is the same as 3x - 12 = y, or y = 3x - 12.
3x+42=6x+12 42=6x-3x+12 42=3x+12 42-12=3x 30=3x 10=x
please elaborate your question
6x - 12 = 3x + 12 Add twelve to both sides.6x - 12 + 12 = 3x + 12 + 12Simplify.6x = 3x + 24Subtract 3x from both sides.6x - 3x = 3x + 24 - 3xSimplify.3x = 24Divide both sides by 3.x = 8The answer is x = 8.
3x=12 3x/3=12/3 x=4
3x+12 = 18 3x = 18-12 3x = 6 x = 2
y-3x+6y=12 7y=3x+12 y=3x/7 +12/7