Question

99 + X :12 = 102

b 6 x X - 45 = 27

c ( X - 64 ) - 48 = 72

d 258 - ( X+ 212 ) = 26

e 165 : ( 5 x X +1 ) = 15

 

Answer 1

b: =>6x=72

=>x=12

c: =>x-64=120

=>x=184

d: =>x+212=232

=>x=20

e: =>5x+1=11

=>5x=10

hay x=2

Answer 2

\(a,x:12=102-99\\ x:12=3\\ x=36\\ b,6x=27+45\\ 6x=72\\ x=12\\ c,x-64=72+48\\ x-64=120\\ x=184\\ d,x+212=258-26\\ x+212=232\\ x=20\\ e,5x+1=165:15\\ 5x+1=11\\ 5x=10\\ x=2\)

Answer 3