Question

Evaluate if a =-2, b = 3, and c = 4.2. a - 2b + 3c

Answer 1

a-2b+3c=

-2 - 2*3 + 3*4,2 =

-2-6+12,6= 4,6

Explanation:

Answer 2

4.6

Explanation:

given the expression

a - 2b + 3c

substitute a = - 2 , b = 3 , c = 4.2 into the expression

= - 2 - 2(3) + 3(4.2)

= - 2 - 6 + 12.6

= - 8 + 12.6

= 4.6