Answer
New York's Population = 19.43 million
Mexico's Population = 19.46 million
Tokyo's Population = 36.67 million
Work Step by Step
Let New York's Population be $x$
Mexico's Population (in millions) $=x+0.03$
Tokyo's Population (in millions) $=2x-2.19$
Total Population of three cities = $75.56$ million
$x+x+0.03+2x-2.19 = 75.56$
Group like terms.
$x+x+2x+0.03-2.19 = 75.56$
Combine like terms.
$4x-2.16 = 75.56$
Add $2.16$ on both sides.
$4x-2.16+2.16 = 75.56+2.16$
$4x = 77.72$
Divide by $4$ on both sides.
$x= 19.43$
New York's Population be $(x) = 19.43$
Mexico's Population (in millions) $=x+0.03$
$=19.43+0.03$
$= 19.46$
Tokyo's Population (in millions) $=2x-2.19$
$=2(19.43)-2.19$
$=38.86-2.19$
$=36.67$
