3/4=(a+5)/21

Simple and best practice solution for 3/4=(a+5)/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 3/4=(a+5)/21 equation: 



3/4=(a+5)/21

We move all terms to the left:

3/4-((a+5)/21)=0

We calculate fractions


(-((a+5)*4)/()+()/()=0



We calculate terms in parentheses: +(-((a+5)*4)/()+()/(), so:

-((a+5)*4)/()+()/(

We add all the numbers together, and all the variables

-((a+5)*4)/()+1

We multiply all the terms by the denominator


-((a+5)*4)+1*()



We calculate terms in parentheses: -((a+5)*4), so:

(a+5)*4

We multiply parentheses

4a+20

Back to the equation:

-(4a+20)



We add all the numbers together, and all the variables

-(4a+20)

We get rid of parentheses

-4a-20

Back to the equation:

+(-4a-20)



We get rid of parentheses

-4a-20=0

We move all terms containing a to the left, all other terms to the right

-4a=20

a=20/-4

a=-5

See similar equations:

| 8=3/4c+12-c+ | | 13s+9s+2=-20 | | 3+2x=34 | | 2x×8=6 | | -3(r-4)0=r | | 4.11+6.6p=6.3p-0.78 | | 7x+2+5x=6=11x+4 | | -12f=-12-11f | | 19h+7=-7+20h | | 3h-3h+4h=20 | | -10r+5r-20=-7r+10 | | 2/3*p=5 | | x-9.7=2.68 | | 20z-6z-8z-4=20 | | x/9÷9/8=3 | | -10r+5r−20=-7r+10 | | 5^-3p=5^2p | | 10=3b=12.5 | | 3/4z+1/4z-5=-5 | | 5-j=2+2j | | 4y-3y+2=12 | | 48-(3c4)=2(c7)c | | 9+4v=-9+2v | | -14y+9y=15 | | -8k+10k-5=5+k | | v-7.39=6.24 | | 5/9x+2/3x-1=35 | | 2p/3=5 | | 24-8b=72 | | -10p+4=-9p | | 9g+g-10g+2g=12 | | 2t+1+2t-3t=6+6 |

Equations solver categories