Question

Tìm x

a) 90x + 29 = 929

b) x - 920 = 80

c) x² = 10000

d) 920 - x = 800

e) 829 - x = 910

f) -29x + 90 = -200

Zúp tui dzới nha :>

Answer 1

Can you here me?

Answer 2

a, 90x+29=929

=>90x=900

=>x=10

b

Answer 3

a) 90x + 29 = 929

90x = 929 - 29

90x = 900

x = 10

b) x - 920 = 80

x = 80 + 920

x = 1000

c) x² = 10000

x² = 100²

=> x = 100

d) 920 - x = 800

x = 920 - 800

x = 120

e) 829 - x = 910

x = 829 - 910

x = -81

f) -29x + 90 = -200

-29x = -200 - 90

-29x = -290

x = -290 : ( - 29 )

x = -10

( gõ gần 30' mỏi tay ghê ^^^ )

Answer 4

Nguyễn Bảo Ngọc câu f bn làm sai r, đáp án là bằng 10

Answer 5

x=0,1000,100