7w-21=3(w+5)

Simple and best practice solution for 7w-21=3(w+5) 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 7w-21=3(w+5) equation:


Simplifying
7w + -21 = 3(w + 5)

Reorder the terms:
-21 + 7w = 3(w + 5)

Reorder the terms:
-21 + 7w = 3(5 + w)
-21 + 7w = (5 * 3 + w * 3)
-21 + 7w = (15 + 3w)

Solving
-21 + 7w = 15 + 3w

Solving for variable 'w'.

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

Add '-3w' to each side of the equation.
-21 + 7w + -3w = 15 + 3w + -3w

Combine like terms: 7w + -3w = 4w
-21 + 4w = 15 + 3w + -3w

Combine like terms: 3w + -3w = 0
-21 + 4w = 15 + 0
-21 + 4w = 15

Add '21' to each side of the equation.
-21 + 21 + 4w = 15 + 21

Combine like terms: -21 + 21 = 0
0 + 4w = 15 + 21
4w = 15 + 21

Combine like terms: 15 + 21 = 36
4w = 36

Divide each side by '4'.
w = 9

Simplifying
w = 9

See similar equations:

| 5x^2-2a-12=0 | | 2x^2+14x-5=4-3x | | (1-u)(4u+2)=0 | | x-(-47)=-21 | | 3r-5+6r=2 | | 12n+4-4n+6= | | 4(x+6)=3(x-6)+x | | x/-1.6=-5 | | xp=xq+5 | | -2/5x=1.3 | | 8y+y-5y=-17 | | 4b+3-6b=3 | | 2y=12+2y | | -1.1x-0.2=-6.8 | | 3r+12r-180=0 | | 35d^2=-275 | | 6.95+5.25r=40 | | px=qx+5 | | 3h+14=3 | | 4e+19=3(e+4) | | 9x+4=1x+24 | | -1/4x=-2.5 | | n^2-2n-3=5000 | | 5(x-1)=3x | | 3(t+5)=9t-21 | | 4y-4y+6y-6=12 | | 40+15x=115 | | -5+2(-2x+1)=-2(3x+6)+7 | | 8-2z=4 | | -2(x-8)+3(1+6x)= | | -18+8c=-3 | | -1=-9+2u |

Equations solver categories