Solve for x
x=4
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21x-21=14x+7
Use the distributive property to multiply 7 by 3x-3.
21x-21-14x=7
Subtract 14x from both sides.
7x-21=7
Combine 21x and -14x to get 7x.
7x=7+21
Add 21 to both sides.
7x=28
Add 7 and 21 to get 28.
x=\frac{28}{7}
Divide both sides by 7.
x=4
Divide 28 by 7 to get 4.
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