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bonjour je ne comprend pas mon exercice de math pouvez vous maider a 5+3x(-5) b (7-9)x(-4-3) c 8-(-15+10)x2 d -2x8+4x(-10):(-2) e -8+2x(-5)+9 f -5-10:[ 3-(-2) ] g 4x [-15-3x(-4) ] h 1+2-(-3+5)x2 merci bocou

Sagot :

MAUDMARINE

Bonjour

Calculer :

a. 5+3x(-5)  = 5 - 15 = - 10

b (7-9)x(-4-3) = - 2 x (- 7) = 14

c 8-(-15+10)x2 = 8 - (- 5) x 2 = 8 - (- 10) = 8 + 10 = 18

d -2x8+4x(-10):(-2) = - 16 - 40 : (- 2) = - 16 + 20 = 4

e -8+2x(-5)+9 = - 8 - 10 + 9 = - 18 + 9 = - 9

f -5-10:[ 3-(-2) ] = 5 - 10 : (3 + 2) = 5 - 10 : 5 = 5 - 5 = 0

g 4x [-15-3x(-4) ] = 4 x (- 15 + 12) = 4 x (- 3) = - 12.

h 1+2-(-3+5)x2 = 1 + 2 - 2 x 2 = 1 + 2 - 4 = 3 - 4 = - 1.