Solve for x
x = \frac{7}{2} = 3\frac{1}{2} = 3.5
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7x+3=45-5x
Use the distributive property to multiply 5 by 9-x.
7x+3+5x=45
Add 5x to both sides.
12x+3=45
Combine 7x and 5x to get 12x.
12x=45-3
Subtract 3 from both sides.
12x=42
Subtract 3 from 45 to get 42.
x=\frac{42}{12}
Divide both sides by 12.
x=\frac{7}{2}
Reduce the fraction \frac{42}{12} to lowest terms by extracting and canceling out 6.
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