Question

-12b+5a
Is it equivalent to 3(a-4b)+2a lols

Answer 1

expand 3(a-4b)+2a

3a-12b+21

-12b+5a

so, yes it is

Answer 2

-12b + 5a = 3(a-4b) + 2a

Add 12b to both sides

5a = 3(a-4b) + 2a + 12b

Subtract 2a from both sides

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

Expand 3(a-4b)

3a = 3a - 12b + 12b

Cancel out 12b

3a = 3a

Yes they are equivalent