Question

2x-5=9 by elimination
3x+3y=4​

Answer 1

Answer:

➯x = 7

➯y = - 17/3

Step-by-step explanation ;

First we have to find the value of x

$<font color= red>$

☛Your equation :$<font color= black>$

✴$<font color= </strong><strong>green</strong><strong> </strong><strong>>$ 2x-5 = 9$<font color= </strong><strong>black</strong><strong>>$

✒2x = 9+5 = 14

∴ x = 14/2 = 7

$<font color= </strong><strong>orange</strong><strong>>$

We have the value of x = 7

Putting the value of x in equation (ii), we get

$<font color= red>$

☛Your 2nd equation :$<font color= </strong><strong>black</strong><strong>>$

✴ $<font color= </strong><strong>green</strong><strong>>$ 3x + 3y = 4$<font color= </strong><strong>blue</strong><strong>>$

✒ 3(7) + 3y = 4 $<font color=</strong><strong>black</strong><strong>>$ [$<font color= </strong><strong>green</strong><strong>>$ x = 7 $<font color= </strong><strong>black</strong><strong>>$ ]

✒ 21 + 3y = 4

✒ 3y = 4 - 21

$<font color= </strong><strong>blue</strong><strong>>$ ∴ y = - 17 / 3