Question

Evaluate the expression for k = –7 and m = –2. Km − m

Answer 1

`\tt 16`

Explanation:

`\tt km-m`

`\tt (k = -7, m=-2)`

(First, for km - m substitute 'k' with '-7' and 'm' with '-2'):-

`\tt \left(-7\right)\left(-2\right)-\left(-2\right)`

⇒ (Multiply):-

`\tt 14-\left(-2\right)` →
`\tt a-\left(-b\right)= a+b`

`\tt 14+2`

⇒ (Add):-

`\tt 16`

~

Answer 2

16

Explanation:

substitute k = - 7 and m = - 2 into the expression

km - m

= - 7(- 2) - (- 2)

= 14 + 2

= 16