How do you evaluate 3a - 5b + c + 2b - a for a=2, b=5, c=4?

1 Answer
Jun 18, 2015

=7

Explanation:

Solving by substituting the respective values of a,b,c into the expression .

3a5b+c+2ba

Given:
a=2,b=5andc=4

Substituting the same:
3.25.5+4+2.52

  • Multiplying the terms
    625+4+102
  • Performing addition :
    6+4+10252
    =20252
  • Performing subtraction
    2027
    =7