Solving systems of linear equations — Harder example | Math | SAT | Khan Academy

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Watch Sal work through a harder Solving systems of linear equations problem.

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just do 9/2 = 4.5 and then divide 14y by 4.5 to find the answer.

stupidropes
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3:23 why did we Multiple each side by 2?

zyadammar
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What I don't think this problem will not take more than 20 sec .we can do it by using A1/A2=b1/b2≠c1/c2

gouthamkumar