Question

please answer my question​

Answer 1

Answer:

a)

$5x - 3x = (5 - 3)x \\ = 2x$

b) 3a–4a = (3-4)a

= –a

c) x²-13x² = (1-13)x² = -12x²

d) 3y-(-y) = 3y+y = 4y

e) -3a - (-7a) = 4a

f) -3abc - 3abc = –6abc