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AIDER MOI SVP
9. Calculer :
A = (- 9) – (- 8) ; B = (+ 5) – (- 8) ;
C = (+ 8) – (- 9,5) ; D = (+ 7) – (+ 13) ;
E = (- 8) – (+ 17) ; F = (- 11,5) – (- 5,4) ;
G = (+ 5,3) – (- 3,5) ; H = - 3,5) – (- 12,7) ;
I = (+ 2,8) – (- 2,5) ; J = (- 7,8) – (- 20,6).

Sagot :

Hello,

- 9 - (-8) = -9 + 8 = -1

(+5) - (-8) = 5 + 8 = 13

(+8) - (-9.5) = 8 + 9.5 = 17.5

(+7) - (+13) = 7 - 13 = -6

(-8) - (+17) = - 8 - 17 = -25

(-11.5) - (-5.4) = -11.5 + 5.4 = -6.1

(+5.3) - (-3.5) = 5.3 + 3.5 = 8.8

(-3.5) - (-12.7) = -3.5 + 12.7 = 9.2

(+2.8) - (-2.5) = 2.8 + 2.5 = 5.3

(-7.8) - (-20.6) = -7.8 + 20.6 = 12.8

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