Q

# Find the value of the following expressions when x = - 1, (i) 2x - 7

Q. 3.     Find the value of the following expressions, when $x=-1$:

(i)  $2x-7$

$\\2x - 7 \\= 2 \times ( -1 ) - 7 \\= -2 - 7 \\= -9$