Answer:
w = -3.6
Explanation:
Simplifying
8.7 + w = 5.1
Solving
8.7 + w = 5.1
Solving for variable 'w'.
Move all terms containing w to the left, all other terms to the right.
Add '-8.7' to each side of the equation.
8.7 + -8.7 + w = 5.1 + -8.7
Combine like terms: 8.7 + -8.7 = 0.0
0.0 + w = 5.1 + -8.7
w = 5.1 + -8.7
Combine like terms: 5.1 + -8.7 = -3.6
w = -3.6
Simplifying
w = -3.6