What is the answer to 21=12(4-3x)+x ?

The answer to 21=12(4-3x)+x is x= 27/35

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21=12(4-3x)+x

21 = 12 (4 - 3 x) + x

x = \frac{27}{35}

Decimal Notation

x = 0.77142 \dots

Solution steps

21 = 12 (4 - 3 x) + x

Switch sides

12 (4 - 3 x) + x = 21

Expand

12 (4 - 3 x) : 48 - 36 x

48 - 36 x + x = 21

Add similar elements:

- 36 x + x = - 35 x

48 - 35 x = 21

Move

48

to the right side

- 35 x = - 27

Divide both sides by

- 35

x = \frac{27}{35}

6.14 = - 1.3 + 3.1 z

\frac{b}{5} = \frac{1}{2}

x, 4 x + 5 y = - 32

m, E = \frac{1}{2} m v^{2} + m g h

2 (x - 1) = 1 - (4 - 5 x)