问题
解答题
求未知数x.
①0.5X-0.8×3=3.6
②3.25:X=6.5:4.
答案
(1)0.5X-0.8×3=3.6,
0.5x-2.4=3.6,
0.5x-2.4+2.4=3.6+2.4,
0.5x÷0.5=6÷0.5,
x=12;
(2)3.25:x=6.5:4,
6.5x=3.25×4,
6.5x÷6.5=13÷6.5,
x=2.
求未知数x.
①0.5X-0.8×3=3.6
②3.25:X=6.5:4.
(1)0.5X-0.8×3=3.6,
0.5x-2.4=3.6,
0.5x-2.4+2.4=3.6+2.4,
0.5x÷0.5=6÷0.5,
x=12;
(2)3.25:x=6.5:4,
6.5x=3.25×4,
6.5x÷6.5=13÷6.5,
x=2.