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comment calculer ce calcule par étapes   A=19- 3x5 + 4x2  /  B=3x (7-5) +10x2  /
C=16[( 24x2-3x2)x 7 + 3]

Sagot :

A = 19-3x5+4x2
   = 19-15+8
   =4+8=12
B = 3x(7-5)+10x2
   =3x(2)+20
   =6+20=26
C = 16[(24x2-3x2)x7+3]
   =16[(48-6)x7+3]
   =16[42x7+3]
   =16(294+3)
   =16(297)=4752
A =19 - 3 x 5 + 4 x 2
= 19 - 15 + 8
= 4 + 8
= 12

B = 3 x ( 7 - 5 ) + 10 x 2 
= 3 x 2 + 20
= 6 + 20
= 26

C = 16 [ ( 24 x 2 - 3 x 2 ) x 7 + 3 ]
= 16 * [ ( 48 - 6 ) x 7 + 3 ]
= 16 * [ 42 x 7 + 3 ]
= 16 * [ 294 + 3 ]
= 16 * 297
= 4 752