Solve for x
x\leq 800
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20000-20x+30x\leq 28000
Use the distributive property to multiply 20 by 1000-x.
20000+10x\leq 28000
Combine -20x and 30x to get 10x.
10x\leq 28000-20000
Subtract 20000 from both sides.
10x\leq 8000
Subtract 20000 from 28000 to get 8000.
x\leq \frac{8000}{10}
Divide both sides by 10. Since 10 is positive, the inequality direction remains the same.
x\leq 800
Divide 8000 by 10 to get 800.
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