Question

936 - ( x + 24 ) = 72

5 . (x + 35 ) = 515

(158 - x ) :7 = 20

 

Answer 1

936 - ( x + 24 ) = 72

936 - x - 24 = 72

912 - x=72

x=840

5 . (x + 35 ) = 515

x+35=515:5

x+35=103

x=68

(158 - x ) :7 = 20

158 - x=20x7

158 - x=140

x=18

Answer 2

936-(x+24)=72

        X+24=936-72

        X+24=864

        X=864-24

        X=840

5.(x+35)=515

X+35=515:5

X+35=103

X=103-35

X=68

(158-x):7=20

158-x=20.7

158-x=140

X=158-140=18

K biết đúng hay sai hì hì, mong thông cảm ạ*cúi đầu*

Answer 3

a) 936 - ( x + 24 ) = 72

 x + 24 = 936 - 72

x + 24 = 864

x = 864 - 24 

x = 840

b) 5 . ( x + 35 ) = 515

x + 35 = 515 : 5

x + 35 = 103

x = 103 - 35

x = 68

c) ( 158 - x ) : 7 = 20 

158 - x = 20 . 7 

150 - x = 140 

x = 158 - 140 

x = 18