x+35=45
=>x=45 - 35
=>x=10
32-25=7
=>x+345=7
=>x=7 - 345
=>x= -338
93 : 3= 31
=> x*2-105= (31+105) : 2
=> x= 68
kick mik nha bạn
x - 35 = 45
x = 45 + 35
x = 80
x + 345 = ( 32 - 25 )
x + 345 = 7
x = 7 - 345
x = -338
x * 2 - 105 = 93 : 3
x * 2 - 105 = 31
x * 2 = 31 + 105
x * 2 = 136
x = 136 : 2
x = 68
x+35=45
x=45-35
x=10
x+345=(32-25)
x+345=7
x=7-345
x= - 338
xX2-105=93:3
xX2-105=31
xX2=31+105
xX2=136
X=136:2
X=68