marifer042007 marifer042007

23-02-2022
Mathematics

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tiap1022 tiap1022

23-02-2022

1. x = 31

2x + x - 3 = 90

3x - 3 = 90

3x - 3 + 3 = 90 + 3

3x + 93

3x / 3 = 93 / 3

x = 31

2.

NPO =

90 - (x - 3) = 2x

90 - (31 - 3) = 2 * 31

90 - (28) = 62

62 = 62

KPN =

90 - 62 = KPN

28 = KPN

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