If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-0.4x=4
We move all terms to the left:
-0.4x-(4)=0
We move all terms containing x to the left, all other terms to the right
-0.4x=4
x=4/-0.4
x=-10
| 3x+9-x=-5x+30 | | b÷7=1.9 | | 4x/3-1/2=2x+1/6 | | -3−4=−2(x+3) | | -4(2+8)=x | | (9+2x)4=5x+12 | | 8=-t+5 | | (-12)(0.5)=x | | 6(2x+3)=10x=12 | | K+2k=8-10 | | 11n+(7=12n-8) | | 6k-10k=6 | | 9+2x=5x+12 | | 4(3x+1)=2(x-3) | | 3(x-8.7)=5.4 | | -5(x+4)+3x=6-(4x-3) | | 2x+6/6=-8 | | -4f+-11=-19 | | 7x+7.56=3x+12 | | -3x-13=-7x+15;x=-7 | | -13r+17r=16 | | 31+w/3=3- | | 5(2k+10)=1 | | 20x+40=140 | | 8.6+0.9x=15.9 | | x-9=4.75 | | 7-y=-14 | | b÷1/5=5/6 | | 7a+16-3a=-3a | | -8m=88 | | b/1/5=5/6 | | (3)^x=121 |