\(\overline{1x32}+\overline{7x8}+\overline{4x}=\overline{200x}\)
\(1032+x.100+708+x.10+40+x=2000+x\)
\(\left(1032+708+40\right)+x.100+x.10+x-x=2000\)
\(1780+x.\left(100+10+1-1\right)=2000\)
\(1780+x.110=2000\)
\(x.110=2000-1780\)
\(x.110=220\)
\(x=220:110\)
\(x=2\)
Theo bài ra ta có : 1x32 + 7x8 + 4x = 200x
1032 + x.100 + 708 + x.10 + 40 + x.1 = 2000 + x.1
x.100 + x.10 + x.1 - x.1 = 2000 - 1032 - 708 - 40
x. ( 100 + 10 + 1 - 1 ) = 968 - 708 - 40
x. ( 110 + 1 - 1 ) = 260 - 40
x. ( 111 - 1 ) = 220
x. 110 = 220
x = 220 : 110
x = 2
Thử lại : 1232 + 728 + 42 = 1960 + 42 = 2002
Vậy : x = 2
1x32+7x8+4x=200x
1032+x.100+708+x.10+40+x=2000+x
(1032+708+40)+x.100+x.10+x−x=2000
1780+x.(100+10+1−1)=2000
1780+x.110=2000
x.110=2000−1780
x.110=220
x=220:110
x=2