bonjour
A) 26-4*2+18/2+1
= 26 - 8 + 9 + 1
= 36 - 8 = 28
C) 42-2*(13,5-7,5)-4.5+2*4)
= 42 - 2 ( 6) - 4.5 + 8
= 42 - 12 - 4.5 + 8
= 50 - 16.5 = 33.5
B)2*9*4-4*(7+2)
= 72 - 4 *9
= 72 - 36
= 36
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bonjour
A) 26-4*2+18/2+1
= 26 - 8 + 9 + 1
= 36 - 8 = 28
C) 42-2*(13,5-7,5)-4.5+2*4)
= 42 - 2 ( 6) - 4.5 + 8
= 42 - 12 - 4.5 + 8
= 50 - 16.5 = 33.5
B)2*9*4-4*(7+2)
= 72 - 4 *9
= 72 - 36
= 36