21x+7=42

Simple and best practice solution for 21x+7=42 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 21x+7=42 equation: 


Simplifying
21x + 7 = 42

Reorder the terms:
7 + 21x = 42

Solving
7 + 21x = 42

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 21x = 42 + -7

Combine like terms: 7 + -7 = 0
0 + 21x = 42 + -7
21x = 42 + -7

Combine like terms: 42 + -7 = 35
21x = 35

Divide each side by '21'.
x = 1.666666667

Simplifying
x = 1.666666667

See similar equations:

| 16x+10x+Ax=180 | | 3x+2=124 | | 3w^2-22w+24=0 | | (x^2+2x)+(y^2-6y)=-14 | | 3w^2-22w+243w=0 | | 2x+27=5x-18 | | w^2+9x+14=0 | | (7p+6)(p-6)=0 | | 1/15y=2/5 | | 40=-10 | | 2.50+15x=1.00+20x | | 2.5+15x=1+20x | | 4(3x+4)-20x=3+5x | | 2(z-7)=5(z+1)-13 | | x*e^2x=0 | | (99+x)(1-x)=100-x^2-98x | | 14-6z-17=8z+24-5z | | X(x-250)3(x-250)=3500 | | 4(u+9)=-5u-27 | | 5.1y=20.4 | | 6y+10=-3y-8 | | 7(2x+-3)+6=-2(-6x-20)-1 | | (99+x)(1-x)=100x^2-98x | | 8x3/28= | | (-6)x(-2)= | | 100^5x=1/10 | | 11/3x=5 | | 0.75x+4=0.5x+8 | | f(x)=4/x^2-6x | | 3a+5=2a+11 | | 3m^2(4+m)=0 | | 3/4x+2=1/2x-1 |

Equations solver categories