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umka2103 [35]
3 years ago
13

What is 3(4a−3)−(6a+5)? (Thank you to everyone for their hard work!)

Mathematics
2 answers:
igomit [66]3 years ago
6 0

Answer:

6a−14

Step-by-step explanation:

Rzqust [24]3 years ago
5 0

Answer:

=6a-14

Step-by-step explanation:

3\left(4a-3\right)-\left(6a+5\right)\\\mathrm{Expand}\:3\left(4a-3\right):\quad 12a-9\\\mathrm{Apply\:the\:distributive\:law}:\quad \:a\left(b-c\right)=ab-ac\\\mathrm{Simplify}\:3\cdot \:4a-3\cdot \:3:\quad 12a-9\\=12a-9\\-\left(6a+5\right):\quad -6a-5\\=12a-9-6a-5\\\mathrm{Simplify}\:12a-9-6a-5:\quad 6a-14\\=6a-14

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