Ответ:
1) 5(3х - 12) + 9 = 7х - 5
15х - 60 + 9 = 7х - 5
15х - 7х = -5 - 9 + 60
8х = 46
х = 5,75
2) 5х + 20 = 3х - 4(х - 2)
5х + 20 = 3х - 4х + 8
5х - 3х + 4х = 8 - 20
6х = -12
х = -2
1) x=6, 2 x =-2
1 Задание
1. 15х-60+9=7x-5
2. 15x-7x= -5+60-9
3. 8x=48
4. x= 5.75
2. Задание
1. 5x+20=3x-4x+8
2. 5x-3x+4x=8-20
3. 6x=-12
4. x=-2
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Ответ:
1) 5(3х - 12) + 9 = 7х - 5
15х - 60 + 9 = 7х - 5
15х - 7х = -5 - 9 + 60
8х = 46
х = 5,75
2) 5х + 20 = 3х - 4(х - 2)
5х + 20 = 3х - 4х + 8
5х - 3х + 4х = 8 - 20
6х = -12
х = -2
Ответ:
1) x=6, 2 x =-2
1 Задание
1. 15х-60+9=7x-5
2. 15x-7x= -5+60-9
3. 8x=48
4. x= 5.75
2. Задание
1. 5x+20=3x-4x+8
2. 5x-3x+4x=8-20
3. 6x=-12
4. x=-2