{3×(x+10)+50}÷8=(5x-40)÷10
问题描述:
{3×(x+10)+50}÷8=(5x-40)÷10
答
(3X+30+50)/8=1/2X-1/4
3/8X+10=1/2X-1/4
3/8X-1/2X=-1/4-10
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答
{3×(x+10)+50}÷8=(5x-40)÷10
10+3X/8=-4+5X/10
3X/8-5X/10=-4-10
两边同乘40,得15X-20X=-14
-5X=-560
X=112