Answer:

1.30x-14

2.38

3.31

4.0

5.47

6.20

7.5

8.5(4x-1)

9.80

10.840x

^^

Answer:

1. -24
2. 38
3. 31
4. 0
5. 47
6. 24
7. 5
8. 15
9. 80
10. 72

Step by step explanation:

example solution (aka. solution for #1):

1.

• (3+7) = 10
• 3 x 10 = 30
• -4^2 ÷ 2 = -8
• 3 x -8 = -24

GEMDAS + PENDAS RULES:

• multiplication and division goes first before addition and subtraction

• answer the ones in () first
• if there is both multiplication and division, just answer the equation from left to right. same goes for addition and subtraction

* It is possible to do this mentally

correct me if I'm wrong :).