21=7s-7

Simple and best practice solution for 21=7s-7 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 21=7s-7 equation:


Simplifying
21 = 7s + -7

Reorder the terms:
21 = -7 + 7s

Solving
21 = -7 + 7s

Solving for variable 's'.

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

Add '-7s' to each side of the equation.
21 + -7s = -7 + 7s + -7s

Combine like terms: 7s + -7s = 0
21 + -7s = -7 + 0
21 + -7s = -7

Add '-21' to each side of the equation.
21 + -21 + -7s = -7 + -21

Combine like terms: 21 + -21 = 0
0 + -7s = -7 + -21
-7s = -7 + -21

Combine like terms: -7 + -21 = -28
-7s = -28

Divide each side by '-7'.
s = 4

Simplifying
s = 4

See similar equations:

| 2+.50x+4=66.6+4 | | 16+7=n | | (x-7.5)+2*(x-7.5)+(3*(2*(x-7.5))-4)=825.5 | | 44=3x+8 | | 66.6x-7(x-.50)=28.50-x | | 6v^2-v-15=0 | | -9x+8=-(-5x+7) | | 8+7w=15 | | 1x+1y=6 | | ln(5x-4)=ln(4)-ln(x-1) | | 6(y+5)=-3 | | -8x+5y=-4 | | 5.5=5x | | 5a^2-24=26a | | -4x+-16=8y | | y=+8 | | 13=14-z | | -4x+8y=-16 | | 0.3(x+0.2)+0.4x=5.5 | | 5+6x=17+3x | | y=+7 | | -3x-12y=51 | | 3.67x-7(x-.50)=-28.50-x | | 12+13x-12=7x+10 | | 3x+1=3+3x | | sinx(sinx+1)=0 | | 1x-4y=-17 | | -2.9-3.4k=6.949 | | 12(x+12)=-4(x+2) | | s(t)=100t-16t^2 | | 4b^2+20b=25 | | .25(x+2)-5=12 |

Equations solver categories