Question

4a -12 + 3b + 12a + b – 8

Answer 1

16a+4b-20.................

Answer 2

4a -12 + 3b + 12a + b – 8

= (4a + 12a) + (3b + b) + (-12 -8)

= (16a) + (4b) + (-20)

= 16a + 4b - 20

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