Question

ai nhanh tui cho 3 tk lun

tìm x nhá

a) (3x - 23) . 14 = 98

b) (4x + 5) : 3 = 7

c) (25 - 6x) . 3 - 5 = 7

d) 180 : (x + 2) - 12 = 33

 

 

Answer 1

c) (25 - 6x) . 3 - 5 = 7

(25 - 6x) . 3=7+5

(25 - 6x) . 3=12

25 - 6x=12/3

25 - 6x=4

6x=25-4

6x=21

x=21/6

x=3,5

Answer 2

a) (3x - 23) . 14 = 98

(3x - 23)=98/14

3x-23=7

3x=7+23

3x=30

x=30/3

x=10

Answer 3

b) (4x + 5) : 3 = 7

(4x + 5)=7.3

4x +5 =21

4x=21-5

4x=16

x=16/4

x=4

Answer 4

thíu nha 

Answer 5

d) 180 : (x + 2) - 12 = 33

180 : (x + 2)=33+12

180 : (x + 2)=45

(x + 2)=180/45

x + 2=4

x=4-2

x=2

Answer 6

XONG HẾT RÙI !!!!

Answer 7

K mình đi !

Answer 8

T.I.C.K mình đi !