How do you solve $4 s - 7 = 8 s$ $4s - 7= 8s$ ?

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Answer 1 · 2017-09-29T18:54:13

See a solution process below:

First, subtract $4 s$ $color(red)(4s)$ from each side of the equation to isolate the $s$ $s$ term while keeping the equation balanced:

$- 4 s + 4 s - 7 = - 4 s + 8 s$ $-color(red)(4s) + 4s - 7 = -color(red)(4s) + 8s$

$0 - 7 = (- 4 + 8) s$ $0 - 7 = (-color(red)(4) + 8)s$

$- 7 = 4 s$ $-7 = 4s$

Now, divide each side of the equation by $4$ $color(red)(4)$ to solve for $s$ $s$ while keeping the equation balanced:

$- \frac{7}{4} = \frac{4 s}{4}$ $-7/color(red)(4) = (4s)/color(red)(4)$

$-7/4 = (color(red)(cancel(color(black)(4)))s)/cancel(color(red)(4))$

$-7/4 = s$

$s = -7/4$

How do you solve 4s - 7= 8s4s−7=8s4s - 7= 8s?