Question

3x-y=23 and x/3+y/4=4

Answer 1

3x -y=23
-y=23-3x

$\frac{x}{3} + \frac{y}{4} = 4$
$\frac{x}{3} + \frac{23 - 3x}{4} = 4$
$4x + 3(23 - 3x) = 4 \times 12$
$4x + 69 - 9x = 48$
$- 5x + 69 = 48$
$- 5x = - 69 + 48$
$- 5x = - 21$
$- x = - \frac{21}{5}$
$x = \frac{21}{5}$

3x-y=23
$3 \times \frac{21}{5} + y = 23$
$\frac{63}{5} + y = 23$
$y = 23 - \frac{63}{5}$
$y = \frac{115 + 63}{5}$
$y = \frac{178}{5}$

Answer 2

Answer:

Look the image

Step-by-step explanation

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