3a+15=42

Simple and best practice solution for 3a+15=42 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+15=42 equation: 


Simplifying
3a + 15 = 42

Reorder the terms:
15 + 3a = 42

Solving
15 + 3a = 42

Solving for variable 'a'.

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

Add '-15' to each side of the equation.
15 + -15 + 3a = 42 + -15

Combine like terms: 15 + -15 = 0
0 + 3a = 42 + -15
3a = 42 + -15

Combine like terms: 42 + -15 = 27
3a = 27

Divide each side by '3'.
a = 9

Simplifying
a = 9

See similar equations:

| 4(a-2)=72 | | 24-3x=1x | | 4a-2=72 | | 14pq*3p= | | 5y+8=29+2y | | [13-4(x-2y)]+10(7x+y)= | | 5(2x+1)+3*4=7*15 | | -6*24a= | | 2z-5(z+1)=-1 | | -6x^2-27x-21= | | 6x+123=9x | | 5x-(2x-5)+2=-3(x+8) | | 2[m-(3m+12)+9]=2(m+3) | | 64v-25v^3= | | 4x+100=5x-4 | | 3x=4+4y | | 2x+11y-2x= | | 5k-3=3k+7 | | 5y+8=20 | | 7x+4=9x-16 | | -2y+10y= | | 6x-4w+4y+2w+2x+7y= | | 4x^2=-8x-2 | | x+2b+c=30 | | 14x+36=-2x | | .3p-.04=.5p+.8 | | 3e-4r=23 | | 3y-5y+10y-4y= | | 40-4(2w+1)=6w-4(6+w) | | 3=10 | | 10x-19=19-8x | | 3y+x=36 |

Equations solver categories