Morgan is adding -12 +7. She writes the following
-12 +7 = ?
She wants to write – 12 as the sum of two integers so that the sum of one of the integers and 7 is equal to 0. How could morgan write -12 to complete this problem? Enter the integers in the box
Question
Answer:
x=-7
Step-by-step explanation:
-12+7+x=-12
-12+7+x+12=-12+12 (add 12 to both sides)
7+x=0(simplify)
7+x-7=0-7(subtract 7 from both sides)
x=-7