1 Answer

Larrys · Answer 1 · 2017-12-23T03:31:12+0000

2x+20 ≤ 119-9x *Move a constant (without a variable) to the opposite side*
-20 -20
___________
2x≤99-9x *Move a variable to the opposite side of the constants*
+9x +9x
----------------
11x≤99 *Divide to isolate the variable*
---- ----
11 11

x≤9

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