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Class 10 (Old)

Course: Class 10 (Old) > Unit 3

Lesson 2: Algebraic methods

Solving system of equations through cross multiplication

Logan solved a system of equations using cross-multiplication method.

\begin{cases} 2y+5x&=53\\\\ 13y-2x&=34 \end{cases}

This is what he gets after applying the formula minus

start underbrace, start fraction, x, divided by, 2, left parenthesis, minus, 34, right parenthesis, minus, left parenthesis, 13, right parenthesis, left parenthesis, minus, 53, right parenthesis, end fraction, end underbrace, start subscript, A, end subscript, equals, start underbrace, start fraction, y, divided by, left parenthesis, minus, 53, right parenthesis, left parenthesis, minus, 2, right parenthesis, minus, left parenthesis, minus, 34, right parenthesis, left parenthesis, 5, right parenthesis, end fraction, end underbrace, start subscript, B, end subscript, equals, start underbrace, start fraction, 1, divided by, left parenthesis, minus, 2, right parenthesis, left parenthesis, 2, right parenthesis, minus, 5, left parenthesis, 13, right parenthesis, end fraction, end underbrace, start subscript, C, end subscript

Which of the following parts of Logan's solution was wrong?

Stuck?

Class 10 (Old)

Course: Class 10 (Old) > Unit 3

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