X x 8 + X x 100 + X x 5 + X x 4 = 34 + 200
X x ( 8 + 100 + 5 + 4 ) = 234
X x 117 = 234 : 117
X = 2
học tốt
x:0,125+x:0,01+x:0,2+x:0,25=34+200
x:0,125+x:0.01+x:0.2+x:0.25=234
x*8+x*100+x*5+x*4 =234
x*(8+100+5+4) =234
x*117 =234
x =234:117
x =2
k cho mk nha!