Question

3(5z-7)+2(9z-11)=4(8z-7)-111
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Answer 1

Explanation:

$\longrightarrow\sf 3(5z-7)+2(9z-11)=4(8z-7)-111$

$\longrightarrow\sf 15z-21+18z-22=32z-28-111$

$\longrightarrow\sf 15z+18z-22-21=32z-138$

$\longrightarrow\sf 33z-43=32z-138$

$\longrightarrow\sf 33z-32z=-138+43$

$\longrightarrow\sf z=-95$

$\therefore\underline{\boxed{\sf z=-95}}$