Solve for x
x=1
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3x+12=21-x\times 6
Use the distributive property to multiply 3 by x+4.
3x+12+x\times 6=21
Add x\times 6 to both sides.
9x+12=21
Combine 3x and x\times 6 to get 9x.
9x=21-12
Subtract 12 from both sides.
9x=9
Subtract 12 from 21 to get 9.
x=\frac{9}{9}
Divide both sides by 9.
x=1
Divide 9 by 9 to get 1.
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