Answered

i. -X - 9 = 11,2
j. 9,7y - 5,7 = -1,7
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Sagot :

Bjr,

- x - 9 = 11.2

- x = 11.2 + 9

- x = 20.2

x = -20.2

9.7y - 5.7 = - 1.7

9.7y = - 1.7 + 5.7

9.7y = 4

y = 4/9.7