0.30x+.05(4-x)=.10(-43)

Solution for 0.30x+.05(4-x)=.10(-43) equation:

Simplifying
0.30x + 0.05(4 + -1x) = 0.10(-43)
0.30x + (4 * 0.05 + -1x * 0.05) = 0.10(-43)
0.30x + (0.2 + -0.05x) = 0.10(-43)

Reorder the terms:
0.2 + 0.30x + -0.05x = 0.10(-43)

Combine like terms: 0.30x + -0.05x = 0.25x
0.2 + 0.25x = 0.10(-43)

Multiply 0.10 * -43
0.2 + 0.25x = -4.3

Solving
0.2 + 0.25x = -4.3

Solving for variable 'x'.

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

Add '-0.2' to each side of the equation.
0.2 + -0.2 + 0.25x = -4.3 + -0.2

Combine like terms: 0.2 + -0.2 = 0.0
0.0 + 0.25x = -4.3 + -0.2
0.25x = -4.3 + -0.2

Combine like terms: -4.3 + -0.2 = -4.5
0.25x = -4.5

Divide each side by '0.25'.
x = -18

Simplifying
x = -18