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Sagot :
Answer:
1. 10
2. -17
3. -26
4. -2
Step-by-step explanation:
[tex]1 ). \ (5 - 2) - (18 -25) = 3 - (-7) = 3 + 7 = 10\\2). \ 7 - ( 8\times 3) = 7 - 24 = -17\\3). \ 6 - 4(6+2) = 6 - ( 4 \times 8) = 6 - 32 = -26\\4). \ -r + 7 + 3r -9 -2r = (-r +3r -2r)+(7 -9) = 0-2= -2[/tex]
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