If it's not what You are looking for type in the equation solver your own equation and let us solve it.
12-3(a-5)=21
We simplify the equation to the form, which is simple to understand
12-3(a-5)=21
Reorder the terms in parentheses
12+(-3a+15)=21
Remove unnecessary parentheses
+12-3a+15=+21
We move all terms containing a to the left and all other terms to the right.
-3a=+21-12-15
We simplify left and right side of the equation.
-3a=-6
We divide both sides of the equation by -3 to get a.
a=2
| 2+N=-92 | | -2x(3x-7)=56 | | 2y+9=10 | | 20+8x=76 | | m-7=10 | | 4(x+5)=14 | | 3x=3x+16 | | 5x+9+4x-9+90=180 | | 90+5x-6+3x=180 | | v^2-8v-14=-5 | | 12c^2+8c+1c=0 | | 9p^2+27p+10=2 | | 8(x+7)=146 | | 2x-7+x=32 | | ln(3t+1)+ln(3t-1)=0 | | ax-bx-ay+by= | | 62=2x+5(x+4) | | n^2+10n-27=-3 | | -11=n-4 | | (110-32)0.56=43.68 | | h(t)=-16t^2+20t+3 | | 10n^2-35=-65n | | 10z+2=11z-6 | | x^2-6x-18=-2 | | a+54=2a | | 3n^2-6n-48=4n | | m^2-2m-6=-3 | | a+44=2a | | ax=-5 | | 2x-4+7x= | | 3(x+y)+4(x+2y)=0 | | -3c-39=-9 |