Can someone or show me how to simplify this equation 22.5+7(n-3.4)

22.5+7 (n-3.4)=19.8n

We simplify the equation to the form, which is simple to understand
22.5+7(n-3.4)=19.8n

Reorder the terms in parentheses
22.5+(+7n-23.8)=19.8n

Remove unnecessary parentheses
+22.5+7n-23.8=+19.8n

We move all terms containing n to the left and all other terms to the right.
+7n-19.8n=-22.5+23.8

We simplify left and right side of the equation.
-12.8n=+1.3

We divide both sides of the equation by -12.8 to get n.
n=-0.1015625

Distribute 7 to n-3.4 which is 22.5 + 7n - 23.8 ..( the answer simplified would be 7n−1.3 )
the answer is n=0.185714285714

The correct graph is the second one, with the points being at (-6,0), (2,0) and reaching down to (-2,-8)