Question

tìm x biết 

a) 135 - ( x + 37 ) = 80

b) ( x - 17 ) + 52 = 158

Answer 1

a) 135 - ( x + 37 ) = 80

( x + 37 ) = 135 - 80

 

( x + 37 ) = 55

x = 55 - 37

x = 18

b) ( x - 17 ) + 52 = 158

( x - 17 ) = 158 - 52

( x - 17 ) = 106

x = 106 + 17

x = 123

Answer 2

a) 135 - ( x + 37 ) = 80

x + 37 = 135 - 80

x + 37 = 55

x = 55 - 37

x = 18

b) ( x - 17 ) + 52 = 158

x - 17 = 158 - 52

x - 17 = 106

x = 106 + 17

x = 123