If it's not what You are looking for type in the equation solver your own equation and let us solve it.
90=3x-15+2x
We move all terms to the left:
90-(3x-15+2x)=0
We add all the numbers together, and all the variables
-(5x-15)+90=0
We get rid of parentheses
-5x+15+90=0
We add all the numbers together, and all the variables
-5x+105=0
We move all terms containing x to the left, all other terms to the right
-5x=-105
x=-105/-5
x=+21
| (3x+3)/(4x+4)=3/4 | | 4+x=-x+2 | | 2x+2x/2+3x-300=6300 | | 20+4b=-3(4-4b) | | 8x=-7x-120 | | (3x+3)/(4x+4)=0 | | 1.6(0.8x+45)=240 | | -m-2(2m+3)=3m+10 | | 12x+4-5x+7=6x+4x+17 | | (1/2)(8x+16)=(1/3)(24x-12) | | -4(2+3n)=19-3n | | 3-7(1-2x)-5x=12x+3 | | 5x+5=− | | 3a+7+2a.a=5 | | 250+.02s=125+.06s | | 23x-6-2x=18-15x | | k-4×13=4 | | 1/2(6x-12)=4 | | 7q=1 | | 4(g-5)=2g-1 | | 4.o5=0.45 | | 3x-6+2x=6+5x | | 36+7u=11u | | (3a+1)/(3a-1)=10 | | 31000/371=11000/x | | 3n+.35=4.10 | | -4x=26=-42 | | u+56=9u | | 2(4r+4)=16 | | 12=7x-4x | | 1/2+-4(2+t)=20 | | y/2+4=9 |