многочлены (решите уравнение) (3x-8)-(7x+1)=21 5-7x=11x-3(x+5). Created by kokosikon. algebra-ru

многочлены (решите уравнение) (3x-8)-(7x+1)=21 5-7x=11x-3(x+5)...

August 2022 2 4 Report

многочлены
(решите уравнение)
(3x-8)-(7x+1)=21
5-7x=11x-3(x+5)

Verified answer

(3x - 8) - (7x + 1) = 21
3x - 8 - 7x - 1 = 21
-4x - 9 = 21
-4x = 21 + 9
-4x = 30
x = -30:4
x = -7,5

5 - 7x = 11x - 3(x + 5)
5 - 7x = 11x - 3x - 15
-7x - 11x + 3x = -15 - 5
-15x = -20
15x = 20
x = 20:15
x = 4/3 = 1 1/3

2 votes Thanks 4

helena312 (3х-8)-(7х+1)=21
3х-8-7х-1=21
3х-7х=21+1+8
-4х=30
х=30:(-4)
х=-7,5
Проверка
((3*-7,5)-8))-((7*-7,5))+1)=21
(-22,5-8)-(-52,5+1)=21
-30,5+51,5=21
21=21

5-7х=11х-3(х+5)
5-7х=11х-3х-15
-7х-11х+3х=-5-15
-15х=-20
х=-20:(-15)
х=20/15=4/3=1.1/3

2 votes Thanks 2

Answers & Comments

Verified answer

mnogochleny vypolnite umnozhenie 7x y3x2xy 4y

mnogochleny dokazhite chto vyrazhenie 643 85 47 kratno 13

mnogochleny vynesite obshij mnozhitel za skobki 60a7 15a9 3xy3 xy2

mnogochleny razlozhite na mnozhiteli 4xx2y6 xy 4y

formuly sokrashyonnogo umnozheniya reshite uravnenie x 13x23 x8

mnogochleny razlozhite na mnozhitel 4xx2y6 xy7 4y

preobrazovanie vyrazhenij razlozhite na mnozhiteli 1 49c2 d2 d2 3d2 a2 b2

formuly sokrashyonnogo umnozheniya predstavte v vide proizvedeniya mnogochlenov 36

preobrazovanie vyrazhenij reshite uravnenie 3x 1225xx 57x23

formuly sokrashyonnogo umnozheniya dokazhite chto pri vseh znacheniyah peremennoj znach

рекомендуемые вопросы

Helpful Links

Helpful Social