Question

式子4x减5.5乘2.4中,当x等于( )时,其结果是1.2?

Answer 1

4x-5.5×2.4=1.2

4x-13.2=1.2

4x=1.2+13.2

4x=14.4

x=14.4÷4

x=3.6

设较小数为x,那么另一个数是1.1x.

1.1x+x=73.5

2.1x=73.5

x=73.5÷2.1

x=35