If x=2 what's 3x+5-4x

You need to substitute all "x"s for "2" in the equation:



and now we count:



so the solution is 3.

(3*2+5-4*2= (here i multiplied 3*2, which is six)

6+5-4*2=(here i added 6 and 5 which is 11)

11-4*2= (here i multiplied 4 and 2 which is 8

11-8=3