2x+21=7x-15

Simple and best practice solution for 2x+21=7x-15 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 2x+21=7x-15 equation:


Simplifying
2x + 21 = 7x + -15

Reorder the terms:
21 + 2x = 7x + -15

Reorder the terms:
21 + 2x = -15 + 7x

Solving
21 + 2x = -15 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
21 + 2x + -7x = -15 + 7x + -7x

Combine like terms: 2x + -7x = -5x
21 + -5x = -15 + 7x + -7x

Combine like terms: 7x + -7x = 0
21 + -5x = -15 + 0
21 + -5x = -15

Add '-21' to each side of the equation.
21 + -21 + -5x = -15 + -21

Combine like terms: 21 + -21 = 0
0 + -5x = -15 + -21
-5x = -15 + -21

Combine like terms: -15 + -21 = -36
-5x = -36

Divide each side by '-5'.
x = 7.2

Simplifying
x = 7.2

See similar equations:

| -7/6x-7=x-2 | | 36=x^2+8x+16 | | 21/3+5= | | 1-8z=4z-32 | | 2x+15*2=400 | | 81=16x^2+32x+16 | | Z^6+i=0 | | -64=-4(z-5)+3 | | 3.2+(-1.3)= | | 15/x-9=8/x+8 | | 3z+8=2z-2 | | 3.2+(-1.3)+(-4.1)= | | 9/5x=2/x-1 | | 2z-8=2z+6+z | | 3(z-7)=138+3z | | -23.6+(-4.8)+43/5*0.4-(-11.5) | | 8(5y+2)=27 | | solvethisequation-23.6+(-4.8)+43/5*0.4-(-11.5) | | x/5−4=2 | | 8N+9=-12 | | y=3/8x+10 | | 3x/4+=27 | | 1/3x6/1 | | 8^-2=1/16 | | 3x+3x+y=43 | | x+(3/2)*ln(x)=34.95 | | 37-4x/9 | | a^2-4a= | | (4x2-10x-24)/(2x+3) | | 4cos(X)=-sin^2(x+4) | | 15/40+(-32/40) | | w-26=11 |

Equations solver categories