Question

If asked to solve the system y = -3x + 5 and 5x - 4y = -3 using substitution, what would you do first and why?

Answer 1

for the substitution method isolate the y on first equation

5x -y = -6 (first subtract 5x on both sides)
-5x -5x
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-y = -5x -6 now just change all signs and you have

y = 5x + 6 now substitute the y for (5x+6) on the second equation.

Answer 2

Thanks So much