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49+6x-15-18=2\times 2x+126x-168-35
Multiply both sides of the equation by 42, the least common multiple of 6,7,14,21.
34+6x-18=2\times 2x+126x-168-35
Subtract 15 from 49 to get 34.
16+6x=2\times 2x+126x-168-35
Subtract 18 from 34 to get 16.
16+6x=4x+126x-168-35
Multiply 2 and 2 to get 4.
16+6x=130x-168-35
Combine 4x and 126x to get 130x.
16+6x=130x-203
Subtract 35 from -168 to get -203.
16+6x-130x=-203
Subtract 130x from both sides.
16-124x=-203
Combine 6x and -130x to get -124x.
-124x=-203-16
Subtract 16 from both sides.
-124x=-219
Subtract 16 from -203 to get -219.
x=\frac{-219}{-124}
Divide both sides by -124.
x=\frac{219}{124}
Fraction \frac{-219}{-124} can be simplified to \frac{219}{124} by removing the negative sign from both the numerator and the denominator.