Question

exxxx 3 rpdddddddddd

Answer 1

gata.spee ca e totul ok

Answer 2

a)   0,45 × ( - 1 / 45 ) × 100 = 45 / 100  × ( - 1 / 45 ) × 100 = - 1

0,45 × 100 × ( - 1 / 45 ) = 45  × - 1 / 45 = - 1

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b)   1 / 9 × ( - 4 / 7 ) + 4 / 7 ×  1 / 9 =  1 / 9 ×  ( - 4 / 7 + 4 / 7 ) =  1 / 9  × 0 = 0

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c)   3 / 5 × ( 5 / 3 + 5 ) = 3 / 5 × ( 5 / 3 +  15 / 3 ) = 3 / 5 × 20 / 3 = 4

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d)   1 / 2 × ( - 3 / 4 ) + 1 / 2 × ( - 1 / 4 ) =  - 3 / 8 - 1 / 8 = - 4 / 8 = - 1 / 2