3x(15-2x)=84

Simple and best practice solution for 3x(15-2x)=84 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 3x(15-2x)=84 equation:


Simplifying
3x(15 + -2x) = 84
(15 * 3x + -2x * 3x) = 84
(45x + -6x2) = 84

Solving
45x + -6x2 = 84

Solving for variable 'x'.

Reorder the terms:
-84 + 45x + -6x2 = 84 + -84

Combine like terms: 84 + -84 = 0
-84 + 45x + -6x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-28 + 15x + -2x2) = 0

Factor a trinomial.
3((-4 + x)(7 + -2x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-4 + x)' equal to zero and attempt to solve: Simplifying -4 + x = 0 Solving -4 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + x = 0 + 4 x = 0 + 4 Combine like terms: 0 + 4 = 4 x = 4 Simplifying x = 4

Subproblem 2

Set the factor '(7 + -2x)' equal to zero and attempt to solve: Simplifying 7 + -2x = 0 Solving 7 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -2x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2x = 0 + -7 -2x = 0 + -7 Combine like terms: 0 + -7 = -7 -2x = -7 Divide each side by '-2'. x = 3.5 Simplifying x = 3.5

Solution

x = {4, 3.5}

See similar equations:

| 10x-24=17x+26 | | 4x+y=220 | | 3x^4+x^2-18=0 | | 5n-7=7(n+1) | | 7cos^3x-7cosx=0 | | x+1/X+2+=5/3 | | -3k-2=-3k+6 | | 123x-321=1 | | 3x^5+x^3-18x=0 | | 666-666x= | | 140=28-14x | | -(6x-3)-(2x-5)+4=-3(x-9)-(8x+8)+7 | | x+.13x=2240.10 | | 4*x+3=5+k | | -7n-16=4n | | x+1/2x+3=_2/3 | | -7q+19q-6q-q=-20 | | 36-4x=6-10x | | 4=32m-16m | | z^2-5z-14= | | x-.5x=36750 | | 7c-5c+5b= | | 15+0.5m=.25m | | -3=32m-16m | | 14u-11u+3u-5u+3u-4=16 | | 4b+3.5=12.5 | | 246x-4(56/37x)*8=6 | | -8y+6=3y-5 | | x-.2x=52 | | 19x+2x-19x-x+2=10 | | 5c+7c+2n= | | -8y+6=-5+15 |

Equations solver categories