4r^2-3.14r^2=80

Simple and best practice solution for 4r^2-3.14r^2=80 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 4r^2-3.14r^2=80 equation: 


Simplifying
4r2 + -3.14r2 = 80

Combine like terms: 4r2 + -3.14r2 = 0.86r2
0.86r2 = 80

Solving
0.86r2 = 80

Solving for variable 'r'.

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

Divide each side by '0.86'.
r2 = 93.02325581

Simplifying
r2 = 93.02325581

Take the square root of each side:
r = {-9.644856443, 9.644856443}

See similar equations:

| 2(8-6x)=-116 | | 8a+3b+2a-4b= | | 56=0.5b^2+6b | | -5(7-4x)=165 | | 4=20-2w | | x=1.5x+1.5x^2 | | 5/x=10/11 | | y=1.5x^2+1.5x | | 12+3x=-3x | | (3x-2)+8=14 | | 2(2-x)=2 | | 6y*-5r= | | -2(10+5x)=-60 | | 42x^3-12x^2+7x-2=0 | | 3x-2+8=14 | | -4(5+x)=-4 | | 4x-8=(1/4)x | | 6p^3+48p^2+24p+192=0 | | 7x+1=25+3x | | 4x-2(-5x+4)=62 | | 15=-0.2k | | 1/8(16m−8)−1718(16m−8)−17= | | 2t+w=10 | | 4.7(m-1)=2(3m+5)-17.69 | | 700+20x-x^2=850 | | -4x+5=-35+4x | | 4x-5whenX=0.5 | | 10-4x=-2x-10 | | 126n^3+21n^2+210n+35=0 | | (x+13)-(x+23)=90 | | 5x^2-1x= | | f(x)=3x^3+3x^2-90x |

Equations solver categories