Question

\(\overline{1x32}\) +\(\overline{7x8}\) +\(\overline{4x}\) =\(\overline{200x}\)

Answer 1

Lời giải:

$\overline{1x32}+\overline{7x8}+\overline{4x}=\overline{200x}$

$1032+x\times 100+708+x\times 10+40+x=2000+x$

$(1032+708+40)+(x\times 100+x\times 10+x)=2000+x$

$1780+x\times 111=2000+x$

$x\times 111-x=2000-1780$

$x\times 110=220$

$x=220:110=2$

Answer 2

\(\overline{1x32}\) + \(\overline{7x8}\) + \(\overline{4x}\) = \(\overline{200x}\)

1032 + 100x + 708 + 10x + 40 + x = 2000 + x

(1032 + 708 + 40) + (100x + 10x + x) = 2000 + x

100x + 10x + x - x = 2000 - (1032 + 708 + 40)

110x = 220

x = 220 : 110

x = 2

Vậy x = 2