If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4.2(15+5x=-20x-21-x
We move all terms to the left:
4.2(15+5x-(-20x-21-x)=0
We add all the numbers together, and all the variables
4.2(15+5x-(-21x-21)=0
| 2/3(x-5)=1/4(x-2)=9/2 | | 3(-3y+9)=0 | | 5(7-9x)=5-6x | | 48=3×r×2 | | 3-x+(-9)=23 | | 5x²-8x-4=0 | | F(x)=-5/8x+16 | | y=200+15+50-30 | | 4v-4+5v-5=90 | | 7/8(9x-9)=6 | | 84x-756=3780 | | x-10x½+24=0 | | x1=−7x2+3x3 | | 6t-5+5t=105(t=4;t=7;t=7;t=10) | | V=(7-2x)(20-2x)x | | 11^(-x+5)=16^-5x | | 0=525a-525a | | 22+0x-2=20 | | (8+u)(3u+5)=0 | | 52=7u−–3 | | 8n+9=6n+25 | | x*x=42.5 | | 12(2/3)=-1(1/9)y | | -8-3(w+13)=(w+11)-7w | | 12x²-28x=0 | | 2x+6x-140+3x-10+x+30=360 | | f(1)=-7(1)-34 | | -2(-4x-1)-x+3=13 | | 4a×4a=-9 | | 2x²+5x-13=0 | | 12x-6=2x-4 | | f(-1)=6-3(-1) |