Question

3x + 4 x = 11, and 4x + 3y = 12​

Answer 1

Answer:

$3x + 4x = 11$

$7x = 11$

$x = \frac{11}{7}$

$now \: lets \: put \: this \: value \: of \: \: x \: in \: 2 \: eq.$

$4x + 3y = 12$

$4( \frac{11}{7} ) + 3y = 12$

$\frac{44}{7} + 3y = 12$

$\frac{44}{7} = 6.28$

$6.28 + 3y = 12$

$3y = 12 - 6.28$

$3y = 5.72$

$y = \frac{5.72}{3}$

$y = 1.90$