Solve for x
x<4
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1.5x<18-12
Subtract 12 from both sides.
1.5x<6
Subtract 12 from 18 to get 6.
x<\frac{6}{1.5}
Divide both sides by 1.5. Since 1.5 is positive, the inequality direction remains the same.
x<\frac{60}{15}
Expand \frac{6}{1.5} by multiplying both numerator and the denominator by 10.
x<4
Divide 60 by 15 to get 4.
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