Question

check if p=4 is the solution of 1/2 (p+3)=7​

Answer 1

$\frac{1}{2} (p+3)=7\\\\\\\frac{1}{2} (4+3)=7\\\\\\\frac{1}{2}\times 7 = 7$

7/2 is not equal to 7

Here LHS is not equal to RHS.