问题
解答题
解方程与解比例.
4x-0.8x-6=16
6:0.8=x:48.
答案
(1)4x-0.8x-6=16,
(4-0.8)x-6+6=16+6,
3.2x=22,
3.2x÷3.2=22÷3.2,
x=6.875;
(2)6:0.8=x:48,
0.8x=6×48,
0.8x÷0.8=288÷0.8,
x=360.
解方程与解比例.
4x-0.8x-6=16
6:0.8=x:48.
(1)4x-0.8x-6=16,
(4-0.8)x-6+6=16+6,
3.2x=22,
3.2x÷3.2=22÷3.2,
x=6.875;
(2)6:0.8=x:48,
0.8x=6×48,
0.8x÷0.8=288÷0.8,
x=360.