7x+8y=21

Simple and best practice solution for 7x+8y=21 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 7x+8y=21 equation: 


Simplifying
7x + 8y = 21

Solving
7x + 8y = 21

Solving for variable 'x'.

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

Add '-8y' to each side of the equation.
7x + 8y + -8y = 21 + -8y

Combine like terms: 8y + -8y = 0
7x + 0 = 21 + -8y
7x = 21 + -8y

Divide each side by '7'.
x = 3 + -1.142857143y

Simplifying
x = 3 + -1.142857143y

See similar equations:

| -.3x+.1y=-.1 | | (x^2+6x-7)(2x+6)=0 | | x-7=124 | | x-7=255 | | 9r+2r-4=6 | | 2x-8-4=3x+1x-6 | | 2y=2x+11 | | -5.5*x+0.56=-65.1 | | 4x-20-9x-3-x=-83 | | 2y=2x-11 | | x-260=130 | | x-.25=170 | | 39-1=156 | | -.4x+.1y=-.1 | | 10(x+10)=5x | | 6.5(z-2)=2.5(3z+3)-6.5 | | (x-3+i)(x-3-i)= | | x-39=156 | | 8x-2(3x-2)=6 | | x+256=392 | | 100x+500=-50x | | 5+3(2u+6)=8 | | x^2=-11x+28 | | .20x+50(6-x)=.40(6) | | 20d=13 | | (3x+3)(x-5)=0 | | 18y+20=-2y | | Y=(8+x)mforx | | 24=8v-7+7 | | 10x=36+4x | | .20+.50=40 | | u^2+2-20=0 |

Equations solver categories