(1/5)x+7x=12

Simple and best practice solution for (1/5)x+7x=12 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 (1/5)x+7x=12 equation: 



(1/5)x+7x=12

We move all terms to the left:

(1/5)x+7x-(12)=0



Domain of the equation: 5)x!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

(+1/5)x+7x-12=0

We add all the numbers together, and all the variables

7x+(+1/5)x-12=0

We multiply parentheses

x^2+7x-12=0

a = 1; b = 7; c = -12;
Δ = b2-4ac
Δ = 72-4·1·(-12)
Δ = 97
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-\sqrt{97}}{2*1}=\frac{-7-\sqrt{97}}{2}
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+\sqrt{97}}{2*1}=\frac{-7+\sqrt{97}}{2}
$

See similar equations:

| 2x-11=x+19 | | -7=-2+x/4 | | 2/3h-156=3829/24 | | 13-1/3n=1/3n-1 | | 120+120+2x+x+x=540 | | 120+120+2x+2x+x=540 | | (v+1)(3v+7)=0 | | 9(-5-r)=-10–2r | | x-84=4*x | | 16d+48-48-16d=0 | | .99x=24 | | 5(v+6)-3v=2v+5(8+2v) | | (N+8)+(n-12)=0 | | (3x)/4+1=5 | | -(x-3)^4=0 | | -36n^2+176n-128=0 | | 5(r+3)=2r+6= | | N+8+n-12=0 | | 3v+8=8+2v+v= | | (1/4)^(x-1)=32^(x+3) | | x-2+2x+54=180 | | -36n^2+1=076n-128 | | -6(-4K+4)=2(2k-2) | | y/4=y/3+2 | | 3(2f+4)=2(3f-6)= | | 6.1h=9.3-3.2h= | | 13-1/3n=1/3-1 | | 24aº8º10a=º2(4º7a) | | 5^(x+2)=3 | | N+6+4=8n | | 13-1/3n=1/3=1 | | 5(1+8r)-6(8r-4)=-19 |

Equations solver categories