Question

Help pleaseeeee !!!!!!

Answer 1

see below

Explanation:

19. -9 x = -117

20. -¹/₈ x = -³/₄

21. ⁵/₆ x = -⁵/₉

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19.

x = 117 / 9

x = 13

20.

x = ³/₄ divide ¹/₈

x = 6

21.

x = -⁵/₉ divide ⁵/₆

x = -²/₃