Answer:

Step-by-step explanation:





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Not completely sure on the symbols, but I think it is 5 x ( 22 - 9 x 2 ) - 2 ( 3 x 2 x 4 ) x 7 = 136. It doesn't really match the answers, so my advice is that you use a calculator for this one, or as the person/teacher who gave you the problem how to solve it.
Answer:
25, and 8
Step-by-step explanation:
5 x 5 = 25
4 x 2 = 8
(x - 4)/(x + 4)
Step-by-step explanation:

<em>Note :</em>
- a² - b² = (a + b)(a - b)
- (a + b)² = a² + 2ab + b²
Answer:
$149
Step-by-step explanation:
He spent 55 on sneakers at first, then he recieved 30 more, and gave 20 to the mom, which i added to the equation, and what he has left i also added.