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12\left(x+4\right)-\left(5x+7\right)=-2+4x
Multiply both sides of the equation by 4, the least common multiple of 4,2.
12x+48-\left(5x+7\right)=-2+4x
Use the distributive property to multiply 12 by x+4.
12x+48-5x-7=-2+4x
To find the opposite of 5x+7, find the opposite of each term.
7x+48-7=-2+4x
Combine 12x and -5x to get 7x.
7x+41=-2+4x
Subtract 7 from 48 to get 41.
7x+41-4x=-2
Subtract 4x from both sides.
3x+41=-2
Combine 7x and -4x to get 3x.
3x=-2-41
Subtract 41 from both sides.
3x=-43
Subtract 41 from -2 to get -43.
x=\frac{-43}{3}
Divide both sides by 3.
x=-\frac{43}{3}
Fraction \frac{-43}{3} can be rewritten as -\frac{43}{3} by extracting the negative sign.