Answer:
Error in the third line.
Step-by-step explanation:
There is an error in the third line.
We are dividing through by 7 but mx is not divided by 7.
Correct solution is:
mx + 7nx =7
x(m + 7n) = 7
x = 7 / (m + 7n).
Answer: x = -2
Step-by-step explanation: vertical lines are the x axis
Graph 60 to 40 try this method I did this question but different questions
8.2 to the nearest one is 8