June 2022 2 3 Report
6. Uprość wyrażenia:

a) (2x + 3y) - (5x - 4y)=

b) -(3a - 4b) + (6a - 7b)=

c) ( -6t + 8z) - (-5t + 9z)=

d) -(9x - 8y) + (-8x - 6y)=

e) (4a +8b) + (5a - 9b)=

7. Po zapisaniu wyrażenia −3(6a + 3b) w najprostszej postaci otrzymamy:

A. −18a + 9b B. 18a− 9b C. 18a+ 9b D. −18a − 9b
szybko pls

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