H-(-7.8)=4

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Solution for H-(-7.8)=4 equation: 


Simplifying
H + -1(-7.8) = 4

Multiply -1 * -7.8
H + 7.8 = 4

Reorder the terms:
7.8 + H = 4

Solving
7.8 + H = 4

Solving for variable 'H'.

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

Add '-7.8' to each side of the equation.
7.8 + -7.8 + H = 4 + -7.8

Combine like terms: 7.8 + -7.8 = 0.0
0.0 + H = 4 + -7.8
H = 4 + -7.8

Combine like terms: 4 + -7.8 = -3.8
H = -3.8

Simplifying
H = -3.8

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