The work shows finding the sum of the algebraic expressions –3a + 2b and 5a + (–7b).
–3a...
Mathematics, 03.06.2020 08:57 stella013108
The work shows finding the sum of the algebraic expressions –3a + 2b and 5a + (–7b).
–3a + 2b + 5a + (–7b)
Step 1: –3a +5a+ 2b + (–7b)
Step 2: (–3 + 5)a + [2 + (–7)]b
Step 3: 2a + (–5b)
Which is used in each step to simplify the sum?
Answers: 3
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