5b-7(3-7b)=-399

Simple and best practice solution for 5b-7(3-7b)=-399 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 5b-7(3-7b)=-399 equation:


Simplifying
5b + -7(3 + -7b) = -399
5b + (3 * -7 + -7b * -7) = -399
5b + (-21 + 49b) = -399

Reorder the terms:
-21 + 5b + 49b = -399

Combine like terms: 5b + 49b = 54b
-21 + 54b = -399

Solving
-21 + 54b = -399

Solving for variable 'b'.

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

Add '21' to each side of the equation.
-21 + 21 + 54b = -399 + 21

Combine like terms: -21 + 21 = 0
0 + 54b = -399 + 21
54b = -399 + 21

Combine like terms: -399 + 21 = -378
54b = -378

Divide each side by '54'.
b = -7

Simplifying
b = -7

See similar equations:

| x+3=x+10 | | 150=6(4-7x) | | Ln(5)+ln(x-1)=1 | | 5x-5=20-2y | | 8a-5+2a=15 | | -24+x=5(7x+2) | | 6+2lnx=4 | | 72=3x+6 | | 6(-3n+7)=150 | | 62=1.8+32 | | 5+1n(x+4)=4 | | -19x=-18 | | 16x-87=56 | | 10x-5x-x=12 | | 25=/-4 | | 90+(5x-14)=9x+16 | | |-7|.73/871/127.574/9 | | t-32=-47 | | 90+(5x-14)+x=180 | | 90+5x-14+x=180 | | 6y+24=12 | | 4/6=y/9 | | 3*sin(x)-.25=0 | | 4/6=7/9 | | 2x+13+57+3x=180 | | 21487x^81349320=y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y+y*39420+y*y*y*y*9832 | | 4x^2+3x=9x | | h=-16t^2-24t+190 | | 23-2x-2x=11 | | p/9=7/9 | | 1-4n+3=-24 | | (2)(-6/5x)(-10) |

Equations solver categories