Пошаговое объяснение:
1) б)
6х – 2 = 2х + 6
6x - 2x = 6 + 2
4x = 8
x = 8 : 4
x = 2
в)
11 + 7х = 55 + 3х
7x - 3x = 55 - 11
4x = 44
x = 44 : 4
x = 11
г)
− 8х + 17 = 3х + 83
3x + 8x = 17 - 83
11x = -66
x = -66 : 11
x = -6
2)а)
5(2 + у) = 4 – 3у
10 + 5y = 4 - 3y
5y + 3y = 4 - 10
8y = -6
y = -6 : 8
y = -0,75
б)
−2(3b + 1) – 14 = 8
-6b - 2 - 14 = 8
-6b - 16 = 8
6b = -16 - 8
6b = -24
b = -24 : 6
b = -4
−3(2 – 5х) = 6(х + 3) – 6
-6 + 15x = 6x + 18 - 6
-6 + 15x = 6x + 12
15x - 6x = 12 + 6
9x = 18
x = 18 : 9
– 3,92у – (1,08у + 5,07) = − 0,89 – у
-3,92y - 1,08y - 5,07 = -0,89 - y
-5y - 5,07 = -0,89 - y
5y - y = -5,07 + 0,89
4y = -4,18
y = -4,18 : 4
y = -1,045
Пошаговое объяснение:
1) б)
6х – 2 = 2х + 6
6x - 2x = 6 + 2
4x = 8
x = 8 : 4
x = 2
в)
11 + 7х = 55 + 3х
7x - 3x = 55 - 11
4x = 44
x = 44 : 4
x = 11
г)
− 8х + 17 = 3х + 83
3x + 8x = 17 - 83
11x = -66
x = -66 : 11
x = -6
2)а)
5(2 + у) = 4 – 3у
10 + 5y = 4 - 3y
5y + 3y = 4 - 10
8y = -6
y = -6 : 8
y = -0,75
б)
−2(3b + 1) – 14 = 8
-6b - 2 - 14 = 8
-6b - 16 = 8
6b = -16 - 8
6b = -24
b = -24 : 6
b = -4
в)
−3(2 – 5х) = 6(х + 3) – 6
-6 + 15x = 6x + 18 - 6
-6 + 15x = 6x + 12
15x - 6x = 12 + 6
9x = 18
x = 18 : 9
x = 2
г)
– 3,92у – (1,08у + 5,07) = − 0,89 – у
-3,92y - 1,08y - 5,07 = -0,89 - y
-5y - 5,07 = -0,89 - y
5y - y = -5,07 + 0,89
4y = -4,18
y = -4,18 : 4
y = -1,045
4х=8
х=2
В) 7х-3х=55-11
4х=44
х=11
Г) -8х-3х=83-17
-11х=66
х= -6
2 А) 10+5у=4-3у
5у+3у=4-10
8у= -6
у= -3/4
Б)
-6b-2-14=8
-6b-16=8
-6b=8+16
-6b=24
b= -4
B)
-6+15x=6x+18-6
15x=6x+18
15x-6x=18
9x=18
x=2
Г)
-3,92у-1,08у-5,07= -0,89-у
-5у+у= -0,89+5,07
-4у=4,18
у= -1,045