(A)
4a/10
A = 5
Put the value of a,
4x5/10
20/10
=2 proved
(B)
2x + 7 = 3 (x-1)
2x+7=3x-3
2x-3x=-3-7
-x=-10
x=10 Proved
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Answers & Comments
(A)
4a/10
A = 5
Put the value of a,
4x5/10
20/10
=2 proved
(B)
2x + 7 = 3 (x-1)
2x+7=3x-3
2x-3x=-3-7
-x=-10
x=10 Proved