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To solve the equation 10x + 13 = -12, we can start by subtracting 13 from both sides:
10x + 13 - 13 = -12 - 13
This simplifies to:
10x = -25
Next, we can divide both sides by 10 to solve for x:
10x/10 = -25/10
This gives us:
x = -2.5