问题
解答题
解方程:
50%χ+130%χ=18
4.6χ-60%χ=40.
答案
(1)50%χ+130%χ=18,
(50%+130%)χ=18,
1.8x=18,
1.8x÷1.8=18÷1.8,
x=10;
(2)4.6x-60%x=40,
(4.6-60%)x=40,
4x=40,
4x÷4=40÷4,
x=10.
解方程:
50%χ+130%χ=18
4.6χ-60%χ=40.
(1)50%χ+130%χ=18,
(50%+130%)χ=18,
1.8x=18,
1.8x÷1.8=18÷1.8,
x=10;
(2)4.6x-60%x=40,
(4.6-60%)x=40,
4x=40,
4x÷4=40÷4,
x=10.