Question

Simplify these expressions and find their values if x=3, a=-1, b=-2 . (2) 2a-2b-4-5+a​

Answer 1

Step-by-step explanation:

a= -1 b= -2

2a-2b-4-5+a

=3a-2b-9

=3×(-1)-2×(-2)-9

= -3+4-9

= -8