If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-40+10a=-7
We move all terms to the left:
-40+10a-(-7)=0
We add all the numbers together, and all the variables
10a-33=0
We move all terms containing a to the left, all other terms to the right
10a=33
a=33/10
a=3+3/10
| 14x+9=-2x+45 | | 4y^2=-32y | | (1/3^x=243 | | -5h=-2h+6 | | -10-8v=-10v+6 | | -2(8y-7)+4y=2(y+2) | | x/7^3+17=-32 | | 5x+40=95 | | 4(-3+3x)+2(6+6x)=-2x+3x | | 7m-3(m+12)=72 | | 3a+15=3a | | (4x+8)+(2x-2)=x | | X-2+3x=2 | | 9y+14=2 | | 6(q-5)=24 | | 16+2x=-5x-12 | | -10-4h=-2h | | -2q=7q-9 | | 6.8(x-2.25)=20.4 | | –3(5m+7)=9 | | 5(v-3)-1=-3(-4v+6)-3v | | !0x+7=-3+12x | | 6x-6-4x=2x+38 | | -9k=-6-10k | | 2x-17+2x-44=147 | | (9x+9)+(12x-3)=x | | 6r-5=8+6r | | 200=20(a+18) | | 5+2n=n+2 | | -3z=7-10z | | 6m+7=m | | 6x+2=94 |