Solve for a
a\leq 25
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16a+400-10a\leq 550
Use the distributive property to multiply 10 by 40-a.
6a+400\leq 550
Combine 16a and -10a to get 6a.
6a\leq 550-400
Subtract 400 from both sides.
6a\leq 150
Subtract 400 from 550 to get 150.
a\leq \frac{150}{6}
Divide both sides by 6. Since 6 is positive, the inequality direction remains the same.
a\leq 25
Divide 150 by 6 to get 25.
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