3(6X+7)≥8-2(5X-9)
问题描述:
3(6X+7)≥8-2(5X-9)
答
3(6X+7)≥8-2(5X-9)
18x+21≥-10x+26
28x≥5
x≥5/28
答
18x+21>=8-10x+18
28x>=5
x>=5/28
答
X≥0.25
答
展开得,18x+21≥8-10x+18,
移项,28x≥5
x≥5/28.