Question

Simplify the expression a-2b, when a=1.4 - 2x and b=-0.2x + 1.7 *

Answer 1

a-2b= -1.6x-2.0

Explanation:

`a=1.4-2x\\b=-0.2x+1.7\\a-2b= (1.4-2x)-2(-0.2x+1.7)\\a-2b= 1.4-2x+0.4x-3.4\\a-2b=-1.6x-2.0\\`

{By, substituting the values of a and b in a-2b , we can find the value of a-2b}