If it's not what You are looking for type in the equation solver your own equation and let us solve it.
XX0.4X=378
We move all terms to the left:
XX0.4X-(378)=0
We move all terms containing X to the left, all other terms to the right
XX0.4X=378
X=378/1
X=378
| 2-2x3-3=5 | | R^2r=6 | | 2x²-8x+6=1 | | 9x+39=60 | | 3x+1/2=14 | | 23.7-yy=10 | | 227=2-u | | 2x²-8x+6=0 | | (8x-37)=(6x+7) | | 23.7y=10 | | 4(x)+16+68=180 | | 3(3x-1)^2=22 | | X+y=378 | | -2x²-10x=300 | | 28/4=x+2/7 | | -2(-8w+5)-7w=3(w-6)-6 | | 1/8d=1/2 | | 1/2d-11=d | | x+x+x+x+5=x-4 | | s/8=56/64 | | y=-5(0)+6 | | z/2=4-z/2 | | 9(3x^2-2x-2)=0 | | 3x+20=13x-20 | | 4x-2x+5=25 | | 6x2=216 | | 56=5u+16 | | 8x/3x=14 | | 4n=24=100 | | 6y−3y−5=−3+23 | | x=5-0.5 | | 15*5x=7x-3 |