9514 1404 393
Answer:
Step-by-step explanation:
It looks like you want to simplify the sums.
1. (3r -4) -(-5b -3) = 3r -4 +5b +3 = 5b +3r +(-4+3)
= 5b +3r -1
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2. (-4k -1) -(-6k -6) = -4k -1 +6k +6 = (-4+6)k +(-1+6)
= 2k +5
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3. (-6k +7) -(7k +5) = -6k +7 -7k -5 = (-6-7)k +(7-5)
= -13k +2
