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15.6 + x =-17.9
x = -17.9 + (-15.6)
x = -33.5
x = -17.9 + (-15.6)
x = -33.5
Given the equation: 15.6 + x = -17.9
To isolate the variable x, we need to get rid of the constant on the left side of the equation. We can do this by subtracting 15.6 from both sides:
15.6 + x - 15.6 = -17.9 - 15.6
Simplifying the equation:
x = -33.5
Therefore, when x = -17.9, 15.6 + x is equal to -33.5.