If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying
84 = 4 + 5x2
Solving
84 = 4 + 5x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-5x2' to each side of the equation.
84 + -5x2 = 4 + 5x2 + -5x2
Combine like terms: 5x2 + -5x2 = 0
84 + -5x2 = 4 + 0
84 + -5x2 = 4
Add '-84' to each side of the equation.
84 + -84 + -5x2 = 4 + -84
Combine like terms: 84 + -84 = 0
0 + -5x2 = 4 + -84
-5x2 = 4 + -84
Combine like terms: 4 + -84 = -80
-5x2 = -80
Divide each side by '-5'.
x2 = 16
Simplifying
x2 = 16
Take the square root of each side:
x = {-4, 4}
| 6n-3=21 | | 11r-5r=18 | | -8-c=-4c+8+5 | | 1000=180+2.50a | | 3x^3+8x^2-31x-60=0 | | -4(x+8)+2x=10 | | -19m+5=20m-12 | | 6x=10(x+1.5) | | 4/5x=3/7 | | 2(u+1)+8=6(2u-4) | | 19.87-1.6+13.8v=-7.4v+1.31 | | -7x+34=-8x-4 | | w(5w^-3)^-2/w^-4 | | 4(3+x)=8+4x | | -5-r=1+r | | 1/5=x^5/2 | | 4(x-5)+2=4x-18 | | w(5w^-3)^2/w^-4 | | 2+(x+65)=180 | | 12t^2+14t=18t+21 | | 7(y-3)=-42 | | 99=(2/3a)-5 | | 1.3y-16.04=2.3y-9.94 | | 2(5+2.5x)=10+5x | | 7+x=8x | | 5y(y+2)+6=3 | | -18p=-17p-16 | | 1.2=16/x | | m*10=138 | | 10b+3-9b=23 | | -20-5u-16=20+2u | | 2(x+1)-4(x-4)=2(x+5) |