3a+2b=21

Simple and best practice solution for 3a+2b=21 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 3a+2b=21 equation: 


Simplifying
3a + 2b = 21

Solving
3a + 2b = 21

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-2b' to each side of the equation.
3a + 2b + -2b = 21 + -2b

Combine like terms: 2b + -2b = 0
3a + 0 = 21 + -2b
3a = 21 + -2b

Divide each side by '3'.
a = 7 + -0.6666666667b

Simplifying
a = 7 + -0.6666666667b

See similar equations:

| 4x-3(2x+5)(4-18x)=2x+4+12(3x-3)(3x-3) | | 3(p-9)=12(p-7) | | a-8=3 | | y^2+3y+2y+2=0 | | 2(x+8)=12(x-10) | | -12p+1=-xp+16 | | (-9-3i)(2+i)= | | -16+4x+1=5 | | 2x-y-z=-3 | | 7/x-3-1/2=3/x-4 | | 17=3x-19 | | 5(n-12)=12(n-9) | | Xp=12p+15 | | A=zv+q | | 12X^3/3X^2 | | 20y-5y=15-5y+5 | | 3/c=3/7 | | 6(a-12)=9(a+10) | | 2x-5/9 | | c/3=3/7 | | 3x-2[x+4(x-5)+3]=2x-2 | | 5(m-8)=12(m-10) | | (10t-15)=(7t) | | 2y+4-8y=6+5y+9 | | 3(2x-5)+3=2x+4 | | 9*n+10=100 | | y=sin(30)*5 | | 3(r+5)=11(r+9) | | 6x+14=8x-22 | | 8a+3b=152.50 | | (5t)=(40) | | 3x+7=5(x-2) |

Equations solver categories