Question

5x+4y=4,x-12y=20 can u answee​

Answer 1

$5x + 4y = 4 ...eq1\\ x - 12y = 20.....multiply \: \\ the \: whole \: eq. \: by \: 5 \\ therefore \: we \: get \\ 5x - 60y = 100 ...eq3 \\ subtract \: equation \: 1 \: and \: 3 \\ we \: get \: 64y \: = \: 104 \\ y = \frac{104}{64} \\ y = 1.62 \\ substitute \: the \: value \: of \\ \: y \: in \: equation 1\: \\ 5x - 4y = 4 \\ 5x - 4(1.62) = 4 \\ 5x = 4 + 6.48 \\ x = 10.48 \div 5 \\ x= 2.096$

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