Tìm x
a, [ x - 15 ] . 15 = 0
b, 32 . [ x - 10 ] = 32
c, [ x - 15 ] - 75 = 0
d, 575 - [ 6x + 70 ] = 445
e, 315 + [ 125 - x ] = 435
f, 541 + [ 218 - x ] = 735
g, [ x - 36 ] : 18 = 2
h, 70 - 5 . [ 2x - 3 ] = 45
k, [ 2x - 39 ] . 7 + 3 = 80
m, [ x - 5 ] . [ x - 8 ] = 0
575- [6x+70] = 445 315 +[125-x] = 435 f 541+[218-x]=435
6x+70 =575-445 125-x = 435- 315 218-x = 541-435
6x+70 = 130 125-x =120 218-x =106
6x = 130-70 x = 125 - 120 x = 218-106
6x = 60 x = 5 x = 112
x = 60:6
x = 10
bạn ơi khó hiểu quá,.,.,.
\(\orbr{\begin{cases}\\\end{cases}}\)