Question

Formulate a system of equations that could be solved by multiplying one equation by 5 and then adding the two equations together to eliminate one of the variables.

Answer 1

`\ \ \ 5 \ (-(1)/(5) a = 10 - b) \\ + (2a = 5b -20) \\ \\ a = 30`

5× the first equation + the second equation will give an equation of 'a' to its value.