3 years ago

Solve the inequality 21 - z < 19

Mathematics

1 answer:

NISA [10]3 years ago

8 0

You need to isolate z, so first subtract 21 from both sides so you have:

-z<-2

Multiply both sides by -1 so z is positive (when a negative number is multiplied or divided in an inequality, the < or > sign flips):

z>2

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