Solve for z
z=65
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5\times 8=z-25
Multiply both sides by 8.
40=z-25
Multiply 5 and 8 to get 40.
z-25=40
Swap sides so that all variable terms are on the left hand side.
z=40+25
Add 25 to both sides.
z=65
Add 40 and 25 to get 65.
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