Question

解方程或比例
4.5-

2

3

X=1

1

2

3﹕

3

7

=1.75﹕X．

Answer 1

4.5-

2

3

X=1

1

2

4.5-1

1

2

=

2

3

x

2

3

x=3
x=3÷

2

3

x=

9

2

3﹕

3

7

=1.75﹕X
3x=1.75×

3

7

3x=

3

4

x=

3

4

÷3
x=

1

4

故答案是x=

9

2

，x=

1

4

．