How to solve this problem using substitution

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.

Find the value of x for which line a is parallel to line b

Solve the equation. 2x - 8(x+1)= 6(2x - 3)