Question

2a-3b+c-4a+2b-5c-3a-b+c resposta ?

Answer 1

2a-3b+c-4a+2b-5c-3a-b+c

[2a + (-4a) + (-3a)] + {-3b +2b -b} + (c + c - 5c)

[5a] + {-2b} + (-3c)