Реши систему уравнений y+x=-2 x−y=18 (__; __). Created by ltandreeva2016. matematika-ru

Реши систему уравнений y+x=-2 x−y=18...

Туралка Y+x=-2
x-y=18

y+x=-2
x=18+y

y+(18+y)=-2
2y+18=-2
2y=-2-18=-20
y=-10

-10+x=-2
x=-2+10=8

Ответ:x=8;y=-10

0 votes Thanks 0

conia2017 У + х = - 2
х - у = 18
у = - 2 - х
х - у = 18
х - ( - 2 - х ) = 18
х = 8
8 - у = 18
у = - 10
( у, х ) = ( 8, - 10 )
- 10 + 8 = - 2
8 - ( - 10 ) = 18
- 2 = - 2
18 = 18
( у, х ) = ( 8, - 10 )

0 votes Thanks 0

Answers & Comments

v nachale uchebnogo goda pyatiklassniki izbrali starostu predsedatelya soveta otryad8090964e0e2341481ff36609d2bae77b 29767

rasschitajte obem videopamyati neobhodimoj dlya hraneniya graficheskogo izobrazheniya0bc3f621b4415357cf7c632a55bcd064 61639

vo vremya kanikul vesyolye chelovechki otpravilis puteshestvovat na raznyh vidah tref4305f1e6b7fb1a47f2578b258f1ffd 71961

reshi zadachu veselye chelovechki reshili shodit v pohod ponchik ispyok dlya vseh pire0b0798cbb5fe1197ee5cbb6028afe8e 56687

reshi sistemu uravnenij 5k9 km 7

reshi metodom algebraicheskogo slozheniya sistemu uravnenij 5y9x9 5yx2 otvet

reshi sistemu uravnenij 8x3y2 4x2

reshi sistemu x8 26xy11 otvetb07b79757dbe0d4e2c3d2fd5eb419c21 707

dana sistema dvuh linejnyh uravnenij y13x2 3y13x4 najdi znachenie peremennoj

reshi sistemu uravnenij metodom podstanovki y4x xy13 otvet

рекомендуемые вопросы

Helpful Links

Helpful Social