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-9x = -9
x = 1
2. 2 + x/4 = 5
x/4 = 3
x = 12
x = (1- 10) : (-5 - 4)
= -9 : -9
= 1
e. 2 + x/4 = 5
x = (5-2) x 4
= 3 x 4
= 12
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