Calculate the value of this expression: |-7| x |5| + 18 |-6|

143

Step-by-step explanation:

|a| mean "absolute value of a, that is, whatever value a takes, be it positive or negative, you take the positive value.

So

|-7| x |5| + 18 |-6|

= 7 * 5 + 18 * 6

= 143