Question

Fill in the blanks:

​​​​​​​(i) The sum of $-2\text{and}-5=\underset{–}{}$ and the sum
of $-2x\text{and}-5x=\underset{–}{}$

Answer 1

Sum of -2 and -5 $=(-2)+(-5)$
$=-2-5$
$=-7$
Sum of -2x and -5x $=(-2x)+(-5x)$
$=-2x-5x$
$=-x(2+5)$
$=-x\left(7\right)$
$=-7x$

Hence, the sum of -2 and -5 = -7 and the sum of
-2x and -5x $=-7x$.