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Category: mathematicsmathematics

Takrorlashga doir misollar yechish

1.

ALGEBRA
MAVZU:
Takrorlashga doir
misollar yechish
O‘qituvchi: Yusupjonova Shahnoza
Mirzatillayevna
7- sinf

2.

MUSBAT VA MANFIY SONLAR USTIDA AMALLAR
0
-a

manfiy sonlar

50 -(-92) =50+92 =142;

a
musbat sonlar
-10+(+4,2)= -10+4,2=-5,8;
-4,25 +(-10,75)= -4,25 -10,75= -15;
10∙(-4,2) = - 42;
-144 : 12= -12.

3.

№ 16(1). Amallarni bajaring:
(-120):((-8)∙(-3)+12:(-3))-(-48):(-16)=
= -120 : (24 - 4) - 3 =
= -120 : 20 -3 =
= - 6 – 3 = -9

4.

№ 16(4). Amallarni bajaring:
5
16
5 ∙(-0,95)+2 ∙
19
17
−0,34
4
1
−8 ∶2 =
7
7
100 95
50 34
60 7
=−

− ∙
− ∙ =
19 100
17 100
7 15
= - 5 - 1 - 4 = -10

5.

№17 Tenglamani yeching:
1) 3x+2x=17+(-27)
5x = -10
x = - 10:5
x = -2
Javob:1)-2 va 4) -1
1
1
4) 4х-2 x=3 : (-2)
3
3
3
1
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