-9(5+7z)=21

Simple and best practice solution for -9(5+7z)=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 -9(5+7z)=21 equation: 


Simplifying
-9(5 + 7z) = 21
(5 * -9 + 7z * -9) = 21
(-45 + -63z) = 21

Solving
-45 + -63z = 21

Solving for variable 'z'.

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

Add '45' to each side of the equation.
-45 + 45 + -63z = 21 + 45

Combine like terms: -45 + 45 = 0
0 + -63z = 21 + 45
-63z = 21 + 45

Combine like terms: 21 + 45 = 66
-63z = 66

Divide each side by '-63'.
z = -1.047619048

Simplifying
z = -1.047619048

See similar equations:

| og(x)+log(x+5)=log(6x+12) | | (5x+2)(3+w)=0 | | 4u^4v^5/20v^5x^6-12v^2 | | -b+5(-4b-8)=-166 | | 5/8y-1/5=1/2 | | (3x+2)+12=4 | | 6+6(x-2)=8-8(x-4) | | 12-2x=2x-12 | | -16=4(v-8)-6v | | Ln(x/0.13) | | -19-(-28)=x/6 | | -19-(-28)==/6 | | x/3.6=75/100 | | 2(3z-2)-2(3-2z)=2 | | 3n+5(-8-5n)=92 | | -8x^2+16x+24=0 | | 7+7x=-23+x | | x/12=12/18 | | -7v+2(v-7)=6 | | 7(x+4)+13= | | 54+6=6+54 | | 6/15=x/25 | | -1+8(13-8M)= | | x^2+12x+36=-27 | | 7r^6u^-10/21r^-8u^8 | | (9x^3-7x^2+8x)+(2x^3+9x^2-12x)= | | 13-x=4-x | | 5/6×1/2 | | (1)/(11x^2) | | -8c+3=-13 | | 4n-3=-31 | | 18x+24y=360 |

Equations solver categories