Question

PLEASE ANSWER CORRECTLY AND NO SPAMMING!!!

Answer 1

Answer:

The equation will be X = 5, Y = -3

Explain:

3×5-2×(-3) = 21

4×5+3×(-3) = 11

Please mark me brainliest.

Answer 2

Answer

$\sf \dashrightarrow 3x - 2y = 21 \: \: --- (i)$

$\sf \dashrightarrow 4x + 3y = 11 \: \: --- (ii)$

By first equation,

$\sf \dashrightarrow 3x - 2y = 21$

$\sf \dashrightarrow 3x = 21 + 2y$

$\sf \dashrightarrow x = \dfrac{21 + 2y}{3}$

Now, we can find the value of y by second equation.

$\sf \dashrightarrow 4x + 3y = 11$

$\sf \dashrightarrow 4 \bigg( \dfrac{21 + 2y}{3} \bigg) + 3y = 11$

$\sf \dashrightarrow \dfrac{84 + 8y}{3} + 3y = 11$

$\sf \dashrightarrow \dfrac{84 + 8y + 9y}{3} = 11$

$\sf \dashrightarrow \dfrac{84 + 17y}{3} = 11$

$\sf \dashrightarrow 84 + 17y = 11 \times 3$

$\sf \dashrightarrow 84 + 17y = 33$

$\sf \dashrightarrow 17y = 33 - 84$

$\sf \dashrightarrow 17y = -51$

$\sf \dashrightarrow y = \dfrac{-51}{17}$

$\sf \dashrightarrow y = -3$

Now, we can find the value of x by first equation.

$\sf \dashrightarrow 3x - 2y = 21$

$\sf \dashrightarrow 3x - 2(-3) = 21$

$\sf \dashrightarrow 3x + 6 = 21$

$\sf \dashrightarrow 3x = 21 - 6$

$\sf \dashrightarrow 3x = 15$

$\sf \dashrightarrow x = \dfrac{15}{3}$

$\sf \dashrightarrow x = 5$

Hence, the values of x and y are -3 and 5 respectively.