10x+21(x-3)=309

Simple and best practice solution for 10x+21(x-3)=309 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 10x+21(x-3)=309 equation:


Simplifying
10x + 21(x + -3) = 309

Reorder the terms:
10x + 21(-3 + x) = 309
10x + (-3 * 21 + x * 21) = 309
10x + (-63 + 21x) = 309

Reorder the terms:
-63 + 10x + 21x = 309

Combine like terms: 10x + 21x = 31x
-63 + 31x = 309

Solving
-63 + 31x = 309

Solving for variable 'x'.

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

Add '63' to each side of the equation.
-63 + 63 + 31x = 309 + 63

Combine like terms: -63 + 63 = 0
0 + 31x = 309 + 63
31x = 309 + 63

Combine like terms: 309 + 63 = 372
31x = 372

Divide each side by '31'.
x = 12

Simplifying
x = 12

See similar equations:

| -16a^5+8a^4-4a^3=0 | | 30000+200x=80000 | | 6y=6y-3x+9 | | 6+x+9=52 | | 8x+22=10x+2 | | y=-450/225m | | -5b-b+4+10b-7=7 | | 24-3x=-6x+9 | | y=-450/225*m | | 4.47x+36=19.9809+6x | | 44x=2x+5 | | 20-6x=-2(x+6) | | x-1.4=.6 | | 15x+20(x-2)=485 | | X-17=4x+24.25 | | (4z+6)(4-z)=0 | | 1+8x=13+6x | | 2(-2x-6)=-28 | | 10x+20(x-2)=290 | | 2.24x+4.48=8.96 | | 15+1.5r=r | | 6/7x5/6 | | x*3-4=15 | | (X+6)*9=52 | | F(9)ifF(x)=5x | | 7(2x+6)=-112 | | -5(x+7)=30 | | 14n+p-6n=16p | | a*4+7=10 | | x+3.4=15.2 | | 3m+12=7m-4 | | 12(x-9)=12 |

Equations solver categories