(5b-10b)+(8d+7d)=

Solution for (5b-10b)+(8d+7d)= equation:

Simplifying
(5b + -10b) + (8d + 7d) = 0

Combine like terms: 5b + -10b = -5b
(-5b) + (8d + 7d) = 0
(-5b) + (8d + 7d) = 0

Combine like terms: 8d + 7d = 15d
(-5b) + (15d) = 0
(-5b) + (15d) = 0

Solving
(-5b) + (15d) = 0

Solving for variable 'b'.

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

Add '(-15d)' to each side of the equation.
(-5b) + (15d) + (-15d) = 0 + (-15d)

Combine like terms: (15d) + (-15d) = 0
(-5b) + 0 = 0 + (-15d)
(-5b) = 0 + (-15d)
Remove the zero:
(-5b) = (-15d)

Divide each side by '-5'.
b = (3d)

Simplifying
b = (3d)