Question

5.3+7x=7.4怎么算x

Answer 1

5.3+7x=7.4
5.3+7x-5.3=7.4-5.3
7x=2.1
7x/7=2.1/7
x=0.3
望采纳！

Answer 2

5.3+7x=7.4
7x=7.4-5.3
7x=2.1
x=2.1/7
x=0.3

Answer 3

7x=7.4-5.3,解得x=0.3

Answer 4

我汗 你调换一下位置 7X=2.1 X=0.3 呵呵 谢谢啦

Answer 5

0.3吗