Answer:
1) x+12.7=-25.2 is given
2)x+12.7-12.7=-25.2-12.7 is the subtraction property of equality(subtracting on both sides)
3)x+0=-37.9(add. inverse/simplification since we're simplifying the equation)
x=-37.9(identity property of addition since x+0 is just x)
Hope this helps!
