How do you solve $3.2y-1.8=3$ ?

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Answer 1 · 2018-03-07T09:05:18

See a solution process below:

First, add $color(red)(1.8)$ to each side of the equation to isolate the $y$ term while keeping the equation balanced:

$3.2y - 1.8 + color(red)(1.8) = 3 + color(red)(1.8)$

$3.2y - 0 = 4.8$

$3.2y = 4.8$

Now, divide each side of the equation by $color(red)(3.2)$ to solve for $y$ while keeping the equation balanced:

$(3.2y)/color(red)(3.2) = 4.8/color(red)(3.2)$

$(color(red)(cancel(color(black)(3.2)))y)/cancel(color(red)(3.2)) = (1.6 xx 3)/color(red)(1.6 xx 2)$

$y = (color(red)(cancel(color(black)(1.6))) xx 3)/color(red)(color(black)(cancel(color(red)(1.6))) xx 2)$

$y = 3/color(red)(2)$

$y = 1.5$

How do you solve 3.2y-1.8=3 3.2y-1.8=3?