Solve for x
x=-2
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3\left(x+3\right)+4x=3\left(2x+1\right)+4
Multiply both sides of the equation by 12, the least common multiple of 4,3.
3x+9+4x=3\left(2x+1\right)+4
Use the distributive property to multiply 3 by x+3.
7x+9=3\left(2x+1\right)+4
Combine 3x and 4x to get 7x.
7x+9=6x+3+4
Use the distributive property to multiply 3 by 2x+1.
7x+9=6x+7
Add 3 and 4 to get 7.
7x+9-6x=7
Subtract 6x from both sides.
x+9=7
Combine 7x and -6x to get x.
x=7-9
Subtract 9 from both sides.
x=-2
Subtract 9 from 7 to get -2.
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