3(y+6)-4(2+5)=123
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Step-by-step explanation:
3(y+6)-4(2+5)=123
(3y+18)-4(7)=123
3y+18-28=123
3y-10=123
3y=123+10
3y=133
y=133/3
verification::::
3(133/3 ×6)-4(2+5)=123
LCM=3
3(133+18/3)-4(7)=123
3(151/3)-28=123
3 cancel with 3
so
151-28=123
123/123
hence proved
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