exam Maths Puzzle Numerical Ability

Can you Please Help Me Solve This equation by using the substitution method?

-x+y+0
y=4x+5

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exam Other Question

the variables x and y vary directly.use the given values to write an equation that relates x and y

x=5,y=40

i have no clue how to do it the cost to rent a car is $19.50 plus $.25 per mile. ifyou have $44 to rent a car, what is the greatest number of miles that you can drive?