25-03-2021
Mathematics

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What is 5a+2.4(a+0.5b)−0.2b

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kf387209 kf387209

25-03-2021

Answer: 7.4a+b

1. distribute

=5a+(2.4)(a)+(2.4)(0.5b)+−0.2b

=5a+2.4a+1.2b+−0.2b

2. combine like terms

=5a+2.4a+1.2b+−0.2b

=(5a+2.4a)+(1.2b+−0.2b)

=7.4a+b

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