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Mathematics
Abigayle Arellano
29 January, 21:54
5 (9-X) ≤ 4 (X+18) blalalalala
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Devin Benitez
29 January, 23:20
0
x ≥ - 3
Step-by-step explanation:
5 (9-x) ≤4 (x+18)
45-5x≤4x+72
subtract 4 from both sides
45-9x≤72
subtract 45 from both sides
-9x≤27
divide by - 9, but when you divide by a negative in an inequality you have to flip the sign
x≥-3
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Erik Cross
30 January, 00:21
0
-3 ≤ x
Step-by-step explanation:
5 (9-X) ≤ 4 (X+18)
Distribute on both sides
45 - 5x ≤ 4x + 72
Add 5x to each side
45 - 5x+5x ≤ 4x+5x + 72
45 ≤ 9x + 72
Subtract 72 from each side
45-72 ≤ 9x + 72 - 72
-27 ≤ 9x
Divide by 9
-27/9 ≤ 9x/9
-3 ≤ x
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