Question

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

Answer 1

I first combined like terms
3x+5-4x=
-x+5
the I substituted 2 for x
-2+5
simplified
 answer is 3

hope this helps

Answer 2

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

$3*2+5-4*2$

and now we count:

$3*2+5-4*2=6+5-4*2=11-4*2=11-8=3$


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