Cc svp c pour demain première heur vous pouvez m aider?????????????????:
5 ×( 8×2-1-2.5+5.1/9.7-5.9)-63:9
5 ×( 8×2-1-2.5+5.1/9.7-5.9)-63:9
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5x(16-9,4+5,1/9,7)-7
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277,7/9,7=2777/97=28,63
Verified answer
= 5 x ( 8 x 2 - 1 - 2.5 + 5.1 / 9.7 - 5.9 ) - 63 : 9= 5 x ( 16 - 1 - 383 / 194 - 5,9 ) - 7
= 5 x ( 15 - 3 819 / 485 ) - 7
= 5 x 3 456 / 485 - 7
= 3 456 / 485 - 7
= 2 777 / 97