simply 5(-1/2)+2(1/4-2×-1/2)
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5(-1/2)+2(1-8/4x-1/2)
=-5/2+2(-7/4×-1/2)
=-5/2+2(14/4) (14/4)=7/2
=-5/2+14/4
There for, L.C.M of 2,4 is 4
=(-10+14)/4
=4/4
=1
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