Which expression is equivalent to 5.6 - (-7.8)A) 5.6-7.8B) 7.8 +5.6 C) -7.8-5.6D) -5.6+7.8
Mathematics · Middle School · Mon Jan 18 2021
Answered on
Given the numerical equation:
5.6 - (-7.8)
Determine the equivalent expression.
Solution:
In order to determine the equivalent expression, we must simply understand first the concept of multiplying, dividing, or introducing signs. If similar signs are introduced, multiplied or divided to one another, the answer will become positive, hence if the signs are opposite to one another, then the answer will become negative. In our case we have a negative sign, and a negative sign therefore the resulting sign will be positive.
= (5.6) - (-7.8)
= 5.6 + 7.8
Final answer:
B) 5.6 + 7.8