How do you solve $7 s - 29 = - 15$ $7s-29=-15$ ?

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Answer 1 · 2017-01-20T12:42:01

$s = 2$ $s=2$

Step 1: Have only the 'parts' with s in them on the left of the = and $" "$ everything else on the other side.

Step 2: Have only s on the left of = and everything else on the
$" "$ other side.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Step 1:

Add $29$ $color(red)(29)$ to both sides

$7 s - 29 = - 15 \to 7 s - 29 + 29 = - 15 + 29$ $color(green)(7s-29=-15" "->" "7s-29color(red)(+29)=-15color(red)(+29$

$7 s + 0 = 14$ $" "color(green)(7s+0=14)$

Step 2:
Multiply both sides by $\frac{1}{7}$ $color(red)(1/7)$

$\frac{7}{7} s = \frac{14}{7}$ $" "color(green)(7/(color(red)(7))s=14/(color(red)(7)))$

But $\frac{7}{7} = 1 and \frac{14}{7} = 2$ $7/7=1 and 14/7=2$ giving:

$s = 2$ $" "color(green)(s=2)$

How do you solve 7s-29=-157s−29=−157s-29=-15?