Q.4 Check whether m = 4 is a solution to the following equations.
(a) 2m+ 7 = 19
(b) 3m-4=m+ 4
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m=4 then 2(4)+7=19
8+7=15 1st is wrong
3m-m=4+4
2(4)=8
8=8
2nd right
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