Предмет: Математика, автор: fhjg

Решите выражение
А) 2(5-3x)=6-5x
Б) 2(1-x)-4(2x+8)=8x+28

Ответы

Автор ответа: isaevaelenka

А)
2(5-3x)=6-5x
10-6х=6-5х
-6х+5х=6-10
- х= - 4
х=4

Б)
2(1-x)-4(2x+8)=8x+28
2-2х-8х-32=8х+28
-10х-8х=28-2+32
-18х=58
х=58/(-18)
х= - 29/9 = -3 2/9

Автор ответа: Валерия0602

а)2(5-3х)=6-5х
10-6х=6-5х
-6х+5х=6-10
-1х=-4/-1
х=4
б)2(1-х)-4(2х+8)=8х+28
2-2х-8х-32=8х+28
-2х-8х-8х=28-2+32
-18х=58/-18
х=3целых 2/9

Валерия0602: -3wtks[ 2/9

Валерия0602: -3целых 2/9

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Решите выражение А) 2(5-3x)=6-5x Б) 2(1-x)-4(2x+8)=8x+28

Ответы

Решите выражение
А) 2(5-3x)=6-5x
Б) 2(1-x)-4(2x+8)=8x+28