Question

帮忙解一个方程式（未知数x乘以0.72%）+（未知数x乘以12%）=200 求未知数x是多少？并给出解答大过程

帮忙解一个方程式（未知数x乘以0.72%）+（未知数x乘以12%）=200
求未知数是多少？并给出解答大过程

Answer 1

x×0.72% + x×12% = 200
等时两边同时乘以 100 得：
0.72x + 12x = 20000
(0.72 + 12)x = 20000
12.72x = 20000
x = 20000÷12.72
x ≈ 1572.33

Answer 2

（x0.72%）+（x12%）=200
12.72%x=200
x=200/12.72%
x=1572.327

Answer 3

x=1572.33

Answer 4

0.72％x＋12％x=200
合并同类项，得12.72％x=200
两边都除以12.75％，得x=250000/159