(10*0.5)(10(3+x))=

Solution for (10*0.5)(10(3+x))= equation:

Simplifying
(10 * 0.5)(10(3 + x)) = 0

Multiply 10 * 0.5
(5)(10(3 + x)) = 0
5((3 * 10 + x * 10)) = 0
5((30 + 10x)) = 0
(30 * 5 + 10x * 5) = 0
(150 + 50x) = 0

Solving
150 + 50x = 0

Solving for variable 'x'.

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

Add '-150' to each side of the equation.
150 + -150 + 50x = 0 + -150

Combine like terms: 150 + -150 = 0
0 + 50x = 0 + -150
50x = 0 + -150

Combine like terms: 0 + -150 = -150
50x = -150

Divide each side by '50'.
x = -3

Simplifying
x = -3