4x-3÷5+2x≥3
6x-3/5≥3
6x≥3+3/5
6x≥18/5
x≥18/5乘以1/6
x≥3/5
啊,我把题目搞错了.应该是
(4x-3)/(5+2x)-3≥0
(4x-3)/(5+2x)-3(5+2x)/(5+2x)≥0
(4x-3-15-6x)/(5+2x)≥0
(-2x-18)/(5+2x)≥0
(x+9)/(5+2x)≤0
-9≤x≤-5/2
解不等式:4x-3除以5+2x>/3(大于或等于3）
4x-3÷5+2x≥3
6x-3/5≥3
6x≥3+3/5
6x≥18/5
x≥18/5乘以1/6
x≥3/5
啊,我把题目搞错了.应该是
(4x-3)/(5+2x)-3≥0
(4x-3)/(5+2x)-3(5+2x)/(5+2x)≥0
(4x-3-15-6x)/(5+2x)≥0
(-2x-18)/(5+2x)≥0
(x+9)/(5+2x)≤0
-9≤x≤-5/2