Answer:
4-9 = 4+(-9)
-6-7 = -6+(-7)
-4-(-9) = -4 + 9
6-(-7) = 6+7
Step-by-step explanation:
Double negatives means a positive and one positive and one negative is a negative.
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2+1=3
15/3=5
split the 3 5's in ratio 2:1 and you get 10:5
Her brother is 8: 8 x 2 is 16, and 16 + 8= 24.
The right triangle is 120 degrees
