Question

Solve for z

−4z + 31 ≥ 17z + 23

Answer 1

z ≤ 8/21

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Explanation:

Flip the inequality sign since you are multiplying by a negative number

21z-8 ≤ 0

1.2 Divide both sides by 21

z-(8/21) ≤ 0

Add 8/21 to both sides

z ≤ 8/21

Answer 2

`z \leqslant (8)/(21)`