M
a sh q l a r
79. Tenglik
shaklida yozing:
1) 34 soni x sondan
18 ta ortiq;
2) 56 soni 14 sonidan x
marta ortiq;
3) x va 3 sonlarining ayirmasining ikkilangani 4 ga teng;
4) x va 5 sonlari yig‘idisining yarmi ularning ko‘paytmasiga
teng.
80. 3;
–2; 1
sonlaridan qaysi biri tenglamaning ildizi bo‘ladi:
1)
3x = –6;
2)
x+3 = 6;
3)
4x–4 = x–5;
4)
5x–8 = 2x +4.
81. (Og‘zaki).
x ning
qanday qiymatlarida tenglama to‘g‘ri tenglikka aylanadi?
1)
x–5 = 6;
2)
4–x = –1;
3)
2x–1 = 0;
4)
3x+2
= 0?
82. – 1; 
; 1 sonlari orasida tenglamaning ildizi bormi?
1)
4(x–1) = 2x – 3;
2)
7(x+1)–6x = 10;
3)
3(x+2) = 4+2x;
4)
5(x+1)–4x = 4.
83. Ildizi:
1)
5 soni; 2) 3 soni; 3) –6 soni; 4)
–4 soni bo‘lgan tenglama tuzing.
84. a sonni
shunday tanlangki, 4x – 3 = 2x+a
tenglama
1) x
= 1; 2) x = –1; 3) x = 
; 4) x = 0,3 ildizga ega bo‘lsin.
Ba'zi mashqlarning javoblari:
J a v o b l a r n i k o' r i sh
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