Пошаговое объяснение:
1) 5x+10=24-2x
7x=14
x=2
2) 6x-27=4x-16
2x=11
x=5.5
3)4x-36=3x-24
x=12
4)9x+6=7x+14
2x=8
x=4
5)9x-15=8x-10
x=5
6)7x+42=20x+16
20x-7x=42-16
13x=26
Пошаговое объяснение:
1) 5x+10=24-2x
7x=14
x=2
2) 6x-27=4x-16
2x=11
x=5.5
3)4x-36=3x-24
x=12
4)9x+6=7x+14
2x=8
x=4
5)9x-15=8x-10
x=5
6)7x+42=20x+16
20x-7x=42-16
13x=26
x=2
5х +10 = 24 - 2х
5х + 2х = 24 - 10
7х = 14
х = 14 : 7
х = 2
2) 3·(2х – 9) = 4·(х – 4)
6х - 27 = 4х - 16
6х - 4х = 27 - 16
2х = 11
х = 11 : 2
х = 5 1/2
3) 4·(х – 9) = 3·(х – 8)
4х - 36 = 3х - 24
4х - 3х = 36 - 24
х =
12
4) 3·(3х + 2) = 7·(х + 2)
9х + 6 = 7х + 14
9х - 7х = 14 - 6
2х = 8
х = 8 : 2
х = 4
5) 3·(3х – 5) = 2·(4х – 5)
9х - 15 = 8х - 10
9х - 8х = 15 - 10
х = 5
6) 7·(х + 6) = 4·(5х + 4)
7х + 42 = 20х + 16
20х - 7х = 42 - 16
13х = 26
х = 26 : 13
х = 2