Solve for x
x\leq 30
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0.4x\leq 18-6
Subtract 6 from both sides.
0.4x\leq 12
Subtract 6 from 18 to get 12.
x\leq \frac{12}{0.4}
Divide both sides by 0.4. Since 0.4 is positive, the inequality direction remains the same.
x\leq \frac{120}{4}
Expand \frac{12}{0.4} by multiplying both numerator and the denominator by 10.
x\leq 30
Divide 120 by 4 to get 30.
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