how to factor 5x+4=7

How do you factor this problem using the substitution method?

5x-4=7
y=-3x
in Factors of a number by

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1 Answer

5x -4=7 5x =7+4 5x =13 x =13/5 x =2.6 Y=-3x Y=-3*2.6 Y=-7.8
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