Question

(0) 2x + Зу = 11
2х - 4у - 24,
.by substitute method
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Answer 1

Answer:

$2x + 3y = 11 \\ 2x = 11 - 3y \\ x = \frac{11 - 3y}{2}$

put in second equation

$2( \frac{11 - 3y}{2} ) - 4y - 24 = 0 \\ 11 - 3y - 4y = 2411 - 7y = 24 \\ - 7y = 24 - 11 \\ - 7y = 13 \\ y = \frac{ - 13}{7}$

put in 1

$2 x- 3 \times \frac{13}{7} = 11 \\ 2x = 11 - + \frac{39}{7} \\ 2x = \frac{77 + 39}{7 } \\ 2x = \frac{116}{7} \\ x = \frac{58}{7}$