Question

by substitution method 2x+y=3 2x-3y=7​

Answer 1

HEY MATE !!!

$2x + y = 3 \: \: \: \: \: \: (1) \\ \\ 2x - 3y = 7 \: \: \: \: \: (2) \\ \\ from \: (1) \\ \\ y = 3 - 2x \\ in \: (2) \\ 2x - (3 - 2x) = 7 \\ 2x - 3 + 2x = 7 \\ 4x = 7 + 3 \\ x = \frac{10}{4} \\ x = \frac{5}{2}$

thus,

y= 3-2x

= 3-2×5/2

= 3-5

=-2

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