August 2018 2 19 Report
1.
b) 2 ( u - 5 ) + 15 = 3 ( u - 4 ) + 10
c) -3 ( y/3 + 1 ) - 2 = 4 ( 1 -y )
d) 2 ( 3a - 2 )- 6 = 4.5 ( 2a - 1 ) + 1/2

Ps: y/3 i 1/2 to ułamek....

2. Dwa bochenki chleba ważą 1.5 kg, a stosunek mas tych chlebów jest równy 8/7, Ile waży każdy bochenek chleba.

8/7 to ułamek ....

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