Question

Salut! Am nevoie de ajutor!!​

Answer 1

Bună!

Presupun că x∈Z

o) 3x+11<44/-11 ⇒ 3x<33/:3 ⇒ x<11

x∈{10, 9, 8, ...}

p) 3+7x≤52/-3 ⇒ 7x≤49/:7 ⇒ x≤7

x∈{7, 6, 5, 4, ...}

r) 5x-23≥22/+23 ⇒ 5x≥45/:5 ⇒ x≥9

x∈{9, 10, 11, 12, ...}

s) 6x-18≥72/+18 ⇒ 6x≥90/:6 ⇒ x≥15

x∈{15, 16, 17, 18, ...}

Answer 2

Răspuns:

o) 3x < 33

x < 11

x= {0,1,2,3,4,5,6,7,8,9,10}

p) 7x <_ 49

x <_ 7

x= {0,1,2,3,4,5,6,7}

r) 5x _> 45

x _> 9

x= {9,10,11,12,13,......n}

s)6x _> 90

x _> 15

x= {15,16,17,18,19,20,......n}

Sper ca te-am ajutat:)