Question

7a-42=700+a等于多少？

Answer 1

7a-42=700+a
7a-a=700+42
6a=742
a=371/3

Answer 2

a等于371/3

Answer 3

7a-42=700+a
7a-a=700+42
6a=742
a=742/6
a=371/3

Answer 4

7a-42=700+a
7a-a=700+42
6a=742
a=742÷6
a=371/3

Answer 5

7a-42=700+a
(7a-a)-42=700+(a-a)
6a-42=700
6a=742
a=742/6
a=371/3