Question

add 3x-7 and 5x+2 and then subtract 3-4x from the sum obtained. Find the value of each expression and the sum of both the expressions, if x is equal to 4

Answer 1

3x-7+5x+2=8x-5
now
(8x-5)-(3-4x)
8x-5-3+4x
=12x-8
=4(3x-2)

Answer 2

add1st
ans 8x-5
after sub
ans 12x-2
then
4(3x-2)