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Leona [35]
3 years ago
9

Write this expression in standard form by collecting like terms:

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
5 0

9 (a - b) + 5 (2a - 2b)

mutiply the first bracket by 9

(9)(a)= 9a

(9)(-b)= -9b

mutiply the second bracket by 5

(5)(2a)=10a

(5)(-2b)= -10b

9a-9b+10a-10b

9a+10a-9b-10b ( combine like terms<em>)</em>

Answer : C. 19a - 19b

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