Question

Solve. 7x -7 = 10. ​

Answer 1

`\boxed{\sf x = (17)/(7)}`

Explanation:

`\sf Solve \: for \: x: \\ \sf \implies 7x - 7 = 10 \\ \\ \sf Add \: 7 \: to \: both \: sides: \\ \sf \implies 7x + ( \boxed{ \sf 7} - 7) = \boxed{ \sf 7} + 10 \\ \\ \sf 7 - 7 = 0 : \\ \sf \implies 7x = 10 + 7 \\ \\ \sf 10 + 7 = 17 : \\ \sf \implies 7x = \boxed{ \sf 17} \\ \\ \sf Divide \: both \: sides \: of \: 7x = 17 \: by \: 7: \\ \sf \implies (7x)/(7) = (17)/(7) \\ \\ \sf \frac{ \cancel{ \sf 7}}{ \cancel{ \sf 7}} = 1 : \\ \sf \implies x = (17)/(7)`

Answer 2

x = 17/7 or 2.428571429

Explanation:

7x - 7 = 10

→ Add 7 to both sides to isolate 7x

7x = 17

→ Divide both sides by 7 to isolate x

x = 17/7 or 2.428571429