Solve for x
x=-6
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3\times 4x=7x-30
Multiply both sides of the equation by 21, the least common multiple of 7,3.
12x=7x-30
Multiply 3 and 4 to get 12.
12x-7x=-30
Subtract 7x from both sides.
5x=-30
Combine 12x and -7x to get 5x.
x=\frac{-30}{5}
Divide both sides by 5.
x=-6
Divide -30 by 5 to get -6.
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