解方程,就一道3×7÷4x=2.1

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解方程,就一道3×7÷4x=2.1解方程,就一道3×7÷4x=2.1解方程,就一道3×7÷4x=2.1解3×7÷4x=2.121÷4x=2.14x=21÷2.14x=10x=2.5x=2.521÷4x

解方程,就一道3×7÷4x=2.1
解方程,就一道
3×7÷4x=2.1

解方程,就一道3×7÷4x=2.1
解 3×7÷4x=2.1
21÷4x=2.1
4x=21÷2.1
4x=10
x=2.5

x=2.5

21÷4x=2.1
4x=21÷2.1=10
x=10÷4
x=2.5

3×7÷4x=2.1
21÷4x=2.1
4x=21÷2.1
4x=10
x=2.5

21÷4x=2.1
21÷2.1=4x
10=4x
10÷4=x
2.5=x
x=2.5