.6+.30(x+10)=10(.21)

Solution for .6+.30(x+10)=10(.21) equation:

Simplifying
0.6 + 0.30(x + 10) = 10(0.21)

Reorder the terms:
0.6 + 0.30(10 + x) = 10(0.21)
0.6 + (10 * 0.30 + x * 0.30) = 10(0.21)
0.6 + (3 + 0.30x) = 10(0.21)

Combine like terms: 0.6 + 3 = 3.6
3.6 + 0.30x = 10(0.21)

Multiply 10 * 0.21
3.6 + 0.30x = 2.1

Solving
3.6 + 0.30x = 2.1

Solving for variable 'x'.

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

Add '-3.6' to each side of the equation.
3.6 + -3.6 + 0.30x = 2.1 + -3.6

Combine like terms: 3.6 + -3.6 = 0.0
0.0 + 0.30x = 2.1 + -3.6
0.30x = 2.1 + -3.6

Combine like terms: 2.1 + -3.6 = -1.5
0.30x = -1.5

Divide each side by '0.30'.
x = -5

Simplifying
x = -5