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1. 2

2. 5/36

3. 8 ¹/₆

4. - 4/11

Step-by-step explanation:

1.

2⁴/₅ + (-¹²/₁₅)

= ¹⁴/₅ - ¹²/₁₅

= ¹⁴/₅ - ⁴/₅

= 14 - 4

      5

= 10/5

= 2

2.

- 3/4 - (- 8/9)

= 5 / 36

3.

- 3 ¹/₂ (- 2 ¹/₃)

= -7/2 * 7/3

= 7 * 7

  2 * 3

= 49/6

= 8 ¹/₆

4.

- 1/4  ÷ 11/16

= - 1/4 * 16/11

= - 16/44

= - 4/11

coins of silver or gold

step-by-step explanation:

step-by-step explanation:

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