问题
解答题
解方程:
(1)(1-30%)x=5.6
(2)2x+40%x=9.6.
答案
(1)(1-30%)x=5.6,
0.7x=5.6,
0.7x÷0.7=5.6÷0.7,
x=8;
(2)2x+40%x=9.6,
(2+40%)x=9.6,
2.4x=9.6,
2.4x÷2.4=9.6÷2.4,
x=4.
解方程:
(1)(1-30%)x=5.6
(2)2x+40%x=9.6.
(1)(1-30%)x=5.6,
0.7x=5.6,
0.7x÷0.7=5.6÷0.7,
x=8;
(2)2x+40%x=9.6,
(2+40%)x=9.6,
2.4x=9.6,
2.4x÷2.4=9.6÷2.4,
x=4.