Question

−2.5+(−7.4)−(−1.2)−(+3.9)+(+0.6)

Answer 1

-12

Explanation:

rewrite the problem. Remember that two minus signs negate each other and become a plus sign and minus signs override plus signs:

-2.5-7.4+1.2-3.9+0.6 = -12

Answer 2

-12

Explanation:

−2.5+(−7.4)−(−1.2)−(+3.9)+(+0.6)

Subtracting a negative is adding

−2.5+(−7.4)+(1.2)−(+3.9)+(+0.6)

Combine like terms

-9.9 +(1.2)−(+3.9)+(+0.6)

-8.7-3.9+.6

-12.6+.6

-12