Question

3b(a-1)+2a(c-b) Value a=1 b=2 c=-1​

Answer 1

Step-by-step explanation:

3a ( a - 1) + 2a ( c - b )

3×1 ( 1 - 1) + 2 × 2 ( -1 - 2 )

3× 0 + 4 (-3)

0 + (-12)

-12

Answer 2

see in the attachment.