Solve for x
x\leq 21
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25x+5x+40\leq 670
Use the distributive property to multiply 5 by x+8.
30x+40\leq 670
Combine 25x and 5x to get 30x.
30x\leq 670-40
Subtract 40 from both sides.
30x\leq 630
Subtract 40 from 670 to get 630.
x\leq \frac{630}{30}
Divide both sides by 30. Since 30 is positive, the inequality direction remains the same.
x\leq 21
Divide 630 by 30 to get 21.
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