问题
解答题
解方程.
10×7-5x=9.2
40%x+1.2=4.8.
答案
10×7-5x=9.2
70-5x=9.2
5x=70-9.2
5x=60.8
x=60.8÷5
x=12.16
40%x+1.2=4.8
0.4x+1.2=4.8
0.4x=3.6
x=9
故答案是x=12.16,x=9.
解方程.
10×7-5x=9.2
40%x+1.2=4.8.
10×7-5x=9.2
70-5x=9.2
5x=70-9.2
5x=60.8
x=60.8÷5
x=12.16
40%x+1.2=4.8
0.4x+1.2=4.8
0.4x=3.6
x=9
故答案是x=12.16,x=9.