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Question

3(5z-7)-2(9z-11)=4(8z-13)-17

Solve this equation.

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Solution

The given question is
3(5z-7)-2(9z-11)=4(8z-13)-17
=> (3×5z)-(3×7)-(2×9z)+(2×11)=(4×8z)-(4×13)-17
=>15z-21-18z+22=32z-52-17
=>-3z+1=32z-69
=>1+69=32z+3z
ie 70=35z
Or z=(70÷35)=2

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