(9.9+0.4)(4.1-0.7)=x

Solution for (9.9+0.4)(4.1-0.7)=x equation:

Simplifying
(9.9 + 0.4)(4.1 + -0.7) = x

Combine like terms: 9.9 + 0.4 = 10.3
(10.3)(4.1 + -0.7) = x

Combine like terms: 4.1 + -0.7 = 3.4
10.3(3.4) = x

Multiply 10.3 * 3.4
35.02 = x

Solving
35.02 = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
35.02 + -1x = x + -1x

Combine like terms: x + -1x = 0
35.02 + -1x = 0

Add '-35.02' to each side of the equation.
35.02 + -35.02 + -1x = 0 + -35.02

Combine like terms: 35.02 + -35.02 = 0.00
0.00 + -1x = 0 + -35.02
-1x = 0 + -35.02

Combine like terms: 0 + -35.02 = -35.02
-1x = -35.02

Divide each side by '-1'.
x = 35.02

Simplifying
x = 35.02