解不等式{5x-4≤2x+5①7+2x≤6+3x②

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解不等式{5x-4≤2x+5①7+2x≤6+3x②
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解不等式{5x-4≤2x+5①7+2x≤6+3x②
解不等式{5x-4≤2x+5①7+2x≤6+3x②

解不等式{5x-4≤2x+5①7+2x≤6+3x②
5x-4≤2x+5①
5x-2x

式{5x-4≤2x+5① 3x<= 9 x<=3
7+2x≤6+3x② x>= 1
1 <= x <= 3

5x-4≤2x+5
3x≤9
x≤3
7+2x≤6+3x
1≤x
x≥1

1、x≤3
2、x≥1

5x-4≤2x+5
5x - 2x ≤ 5 + 4
3x ≤ 9
x ≤ 3
7+2x≤6+3x
2x - 3x ≤ 6 - 7
-x ≤ -1
x ≥1

5x-4≤2x+5则3x≤9 x≤3
7+2x≤6+3x则1≤x