21-(-8)-4=

Simple and best practice solution for 21-(-8)-4= 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-(-8)-4= equation: 


Simplifying
21 + -1(-8) + -4 = 0

Multiply -1 * -8
21 + 8 + -4 = 0

Combine like terms: 21 + 8 = 29
29 + -4 = 0

Combine like terms: 29 + -4 = 25
25 = 0

Solving
25 = 0

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

See similar equations:

| -5+10=12x-3-11x | | 4a-5=2a-3 | | y=-2x^2+400x | | 3(2-4x+x^2)=0 | | =9/5(-35)+32 | | 7y-17y=-44-56 | | 11k-(4k+(-5+5k))=0 | | -19-7x=10+15 | | 2x+5/3=4/5 | | -26-6b=-2(1+5b) | | -7(4b+3)+(29b-5)=0 | | -9*7+5*-4+3*6= | | -9(t-8)-(t+2)= | | 4-b=19 | | 3.4q-5.8-5.6q=-3.2q-2.8 | | 146-5x=4x-20 | | -2.5=.75x+.50 | | 8d+4d+6d-8=2d | | 4*-9+6*2-2*-3= | | 2(4c-1)-2=6c+2 | | (X-3)(x-3)=100 | | X+21=2x-37 | | x^4+x^2-2x=0 | | 2a-4=3a+6 | | 3t-8=4(t+5) | | 4-9a+8a=7 | | 7x^2-37x+9=-1 | | 10-(3y-9)=2-4y | | 9(2x-1)+3x+4=12x+5+7 | | -6(d-3)=-d | | -p=-36 | | ax-9b=4c |

Equations solver categories