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alexira [117]
3 years ago
5

Solve -np-80<60 for n. Show your work. Solve 2a-5d=30 for d. Show your work.

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
8 0

-np-80 < 60\qquad\text{change the signs}\\\\np+80

------------------------------------------------------

2a-5d=30\qquad\text{subtract 2a from both sides}\\\\-5d=-2a+30\qquad\text{change the signs}\\\\5d=2a-30\qquad\text{divide both sides by 5}\\\\d=0.4a-6

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