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Determina numarul necunoscut din relatiile de mai jos,apoi verifica: 100-24 - x :4=81 :9+ 59 70: y-10=2x0:6 5+30-10xZ =25-5x4

Răspuns :

Rapunzel15
100-24-X:4 =81:9+59
76 - X : 4 = 9+59
76 - X:4 = 68
X :4 = 76 - 68
X :4 = 8
X = 8×4
X = 32
V. 76 - 32 :4 = 76 -8 = 68

70 : Y- 10 = 2×0:6
70 : Y - 10 = 0
70 : Y = 10
Y = 70:10
Y = 7
V. 70 : 7-10 = 10 -10 = 0

5+30-10×Z = 25 - 5×4
35 - 10×Z = 25 - 20
35-10×Z = 5
10 × Z = 35 - 5
10 × Z = 30
Z = 30:10
Z = 3
V. 35-10×3 = 35 - 30 = 5

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