Question

4 x 5-10 - 2 (1-2) + 5=

Answer 1

`17`

Explanation:

`4\cdot \:5-10-2\left(1-2\right)+5`

`\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}`

`=4\cdot \:5-10-2\left(-1\right)+5`

`=20-10-2\left(-1\right)+5`

`=20-10-\left(-2\right)+5`

`20-10=10`

`=10-\left(-2\right)+5`

`-\left(-2\right)=+2`

`=10+2+5`

`10+2=12`

`=12+5`

`12+5=17`

`=17`