42-x=30

Simple and best practice solution for 42-x=30 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 42-x=30 equation: 


Simplifying
42 + -1x = 30

Solving
42 + -1x = 30

Solving for variable 'x'.

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

Add '-42' to each side of the equation.
42 + -42 + -1x = 30 + -42

Combine like terms: 42 + -42 = 0
0 + -1x = 30 + -42
-1x = 30 + -42

Combine like terms: 30 + -42 = -12
-1x = -12

Divide each side by '-1'.
x = 12

Simplifying
x = 12

See similar equations:

| 5V+6=4+-8 | | (-3)+4+(-12)= | | 7x+5-3x= | | 42y=30 | | -5z(z-1)(z+2)=0 | | x+4=3x-4+2-5 | | y=(x-7)(x+13) | | f(x)=5x^2-3 | | -5r-8=7r+28 | | 12x+22=54 | | 6x+10=y | | 64+12d=8d | | 4(d+3)=3(3d+-6) | | y=(x-13)(x+14) | | 6x+5-8x=-3 | | x^2+10x+x^2+3x=-10+14 | | (5v-9)(4+v)=0 | | -3y+12=-35 | | -q-6(-6q+2)= | | 5b+5b=10 | | =-2(x-5)(-2)(x)+(-2)(-5)-2x+10 | | -1-6m-m=-8 | | 36=12d | | n=450-3p | | 7x-2=4(x-10) | | 16=-6x-4(2x+3) | | p=0.1s+2000 | | Y+3=7y+-21 | | 6x+-4x= | | 4x+24=4x^2-8-32 | | 8(2x-10)+4=32 | | 7=3n-3-5n |

Equations solver categories