Question

find the value of the following

Answer 1

2a+b-5c
⇒2*2+(-1)-5*3
⇒4-1-15
⇒3-15
⇒-12

Answer 2

Hello...

Your answer is here.

Just see the picture...
a)- -12
b)- 49 complete 1 by 4
c)- -2

Thankyou Buddy