5a-(4)=21

Simple and best practice solution for 5a-(4)=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 5a-(4)=21 equation: 


Simplifying
5a + -1(4) = 21

Multiply -1 * 4
5a + -4 = 21

Reorder the terms:
-4 + 5a = 21

Solving
-4 + 5a = 21

Solving for variable 'a'.

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

Add '4' to each side of the equation.
-4 + 4 + 5a = 21 + 4

Combine like terms: -4 + 4 = 0
0 + 5a = 21 + 4
5a = 21 + 4

Combine like terms: 21 + 4 = 25
5a = 25

Divide each side by '5'.
a = 5

Simplifying
a = 5

See similar equations:

| 7(y+8)=9y+56 | | 5x+36=14x-45 | | 32=-81(1-5x) | | 5a-4=21 | | [2y+1]=-7 | | 3(4r-6)=78 | | [x+2]=7 | | -3(-m-2)=-18 | | x-14=-5-29 | | 25x+5(x-5)+10(x-9)= | | 4x+26=13x-82 | | 7(-b+2+7-1)=13+3b+5b | | 15b-9=51 | | X(x^2+3)=6+x^3 | | 25x+5x+25+10x-90= | | 1.5(2x+2)=6 | | .05x+.12x=.85 | | 2a+2/3=a-1/3 | | 4(x+2)=58+3x | | -38=13a+1 | | 285-6x=39x+20 | | f=-4+6x | | f=-3+4x-1+2x | | -8-9x=138-44x | | 6y+-4(y-2)+4= | | 2*w+3=24 | | (8-3*2)2= | | 8-9x=138-44x | | 7x-29=55 | | 4+15r=100 | | 3a+18a= | | 46=10r-14 |

Equations solver categories