问题
解答题
解方程、解比例. X+
4X-6=18 2:17=16:X. |
答案
(1)x+
x=35,1 4
x=35,5 4
x÷5 4
=35÷5 4
,5 4
x=28;
(2)4x-6=18,
4x-6+6=18+6,
4x=24,
x=6;
(3)2:17=16:x,
2x=16×17,
2x=272,
2x÷2=272÷2,
x=136.
解方程、解比例. X+
4X-6=18 2:17=16:X. |
(1)x+
x=35,1 4
x=35,5 4
x÷5 4
=35÷5 4
,5 4
x=28;
(2)4x-6=18,
4x-6+6=18+6,
4x=24,
x=6;
(3)2:17=16:x,
2x=16×17,
2x=272,
2x÷2=272÷2,
x=136.