How do you solve $9x+20=-16$ ?

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Answer 1 · 2016-07-26T21:03:05

$x=-4$

1.) First, subtract $20$ from each side.

$9x + 20 -color(blue)(20) = -16 -color(blue)(20)$

2.) The $20$ s cancel out on the left side. Simplify the right side (add $-16 and 20$ ).

$9x = -36$

3.) Now divide out $9$ to finish isolating $x$ .

$(9x)/(color(green)(9)) = -36/(color(green)(9)$

4.) The $9$ s cancel out on the left and the right can be simplified.

$x = -4$

How do you solve 9x+20=-169x+20=-16?