Question

solve the simultaneous equation
$1)x + 4y = - 4 \\ \\ 2)3y - 5x = - 1$

Answer 1

Answer:

x = 8/23 , y = -21/23

Step-by-step explanation:

x + 4y = -4  ------------------ [ 1 ]

3y - 5x = -1  ------------------ [ 2 ]

Equation [ 1 ] x 5:

5x + 20y = -20  ------------------ [ 1a ]

Equation [ 1a ] + [ 2 ]:

23y = -21

y = - 21/23

Sub y = -2123 into equation [ 1 ]:

x + 4y = -4

x + 4(-21/23) = -4

x - 84/23 = -4

x = -4 + 84/23

x = 8/23

Answer: x = 8/23 , y = -21/23

Answer 2

$\mathbb{\purple{\huge{Heya\:Walkers!!}}}$

$<b><u>Answer</u></b>$

$<b>1. x = - 8</b>$

$<b>2. x = - 5</b>$

$<b><u>Step-by-step explanation</u></b>$

1. Put x = 4

4 + 4y = - 4

4y = - 4 - 4

4y = - 8

y = $\frac{-8}{4}$

$<b>y = - 2.</b>$

______________________________

2. Put y = - 7

3(-7) - 5x = - 1

-21 - 5x = - 1

-5x = - 1 + 21

-5x = 20

x = $\frac{20}{-5}$

x = $\frac{5}{-1}$

$<b>x = - 5</b>$

Thanks....!

With♥️