3.9*(4+x)=3.9*2.5*x

Solution for 3.9*(4+x)=3.9*2.5*x equation:

Simplifying
3.9(4 + x) = 3.9 * 2.5x
(4 * 3.9 + x * 3.9) = 3.9 * 2.5x
(15.6 + 3.9x) = 3.9 * 2.5x

Multiply 3.9 * 2.5
15.6 + 3.9x = 9.75x

Solving
15.6 + 3.9x = 9.75x

Solving for variable 'x'.

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

Add '-9.75x' to each side of the equation.
15.6 + 3.9x + -9.75x = 9.75x + -9.75x

Combine like terms: 3.9x + -9.75x = -5.85x
15.6 + -5.85x = 9.75x + -9.75x

Combine like terms: 9.75x + -9.75x = 0.00
15.6 + -5.85x = 0.00

Add '-15.6' to each side of the equation.
15.6 + -15.6 + -5.85x = 0.00 + -15.6

Combine like terms: 15.6 + -15.6 = 0.0
0.0 + -5.85x = 0.00 + -15.6
-5.85x = 0.00 + -15.6

Combine like terms: 0.00 + -15.6 = -15.6
-5.85x = -15.6

Divide each side by '-5.85'.
x = 2.666666667

Simplifying
x = 2.666666667