Question

50+30z=250+10z

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Answer 1

50+30z=250+10z

z=10

Explanation:

50+30z=250+10z

Substract 50 on both sides

50+30z-50=250+10z-50

Simplify

30z=10z+200

Substract 10z on both sides

30z-10z=10z+200-10z

20z=200

200/20 = 10

Answer z=10