Solve for x
x=\frac{31}{75}\approx 0.413333333
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7.5x+18.9=7\times 3+1
Multiply both sides of the equation by 3.
7.5x+18.9=21+1
Multiply 7 and 3 to get 21.
7.5x+18.9=22
Add 21 and 1 to get 22.
7.5x=22-18.9
Subtract 18.9 from both sides.
7.5x=3.1
Subtract 18.9 from 22 to get 3.1.
x=\frac{3.1}{7.5}
Divide both sides by 7.5.
x=\frac{31}{75}
Expand \frac{3.1}{7.5} by multiplying both numerator and the denominator by 10.
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