Makakuha ng kaugnay na sagot sa lahat ng iyong katanungan sa IDNStudy.com. Tuklasin ang mga maaasahang impormasyon sa anumang paksa sa pamamagitan ng aming network ng bihasang mga propesyonal.

solve this using linear equation by Substitution
x+y=-2
2y=8


Sagot :

Using Substitution Method:
x + y = -2    ----equation 1
2y = 8     -------equation 2
--------------------------------------
From equation 2
2y = 8
Divide the whole equation with 2
(2y = 8) ÷ 2
y = 4
--------------------------------------
Substitute y=4 to equation 1
x + y = -2
x + 4 = -2
x = -2 - 4
x = -6
--------------------------------------
Therefore the values of x and y are -6 and 4 respectively.
*end*
[tex]Let \ 2y=8 \ be \ the \ first \ equation \\ Let \ x+y=-2 \ be \ the \ second \ equation \ \\ \\ \\ Let's \ begin \ the \ solution \ with \ the \ first \ equation; \\ \\ 2y=8 \\ \\ \frac{2y}{2}= \frac{8}{2} \\ \\ \boxed{y=4} \\ \\ Now \ the \ second \ equation; \\ \\ x+y=-2 \\ \\ Substitute y to 4; \\ \\ x+4=-2 \\ \\ x=-2-4 \\ \\ \boxed{x=-6} \\ \\ Conclusion; \\ \\ \boxed{Thus,x=-6 \ and \ y=4} \\ \\ Hope \ it \ help:) \\ Domini[/tex]