Ответ:
Пошаговое объяснение:
1)9x-4x=-9x-4
9x-4x+9x=-4
14x=-4
x=-3.5
2)5(x-3)=4x
5x-15=4x
5x-4x=15
x=15
3)7(-3+2x)=-6x-1
-21+14x=-6x-1
14x+6x=-1+21
20x=20
x=1
4)-4(5-4x)=x+1
-20+16x=x+1
16x-x=1+20
15x=21
x=1.4
5)4+3(10x+7)=-5
4+30x+21=-5
30x=-5-4-21
30x=-30
x=-1
6)10-2(-x-7)=9
10+2x+7=9
2x=9-10-7
x=-4
7)3x-10=2+6(5+4x)
3x-10=2+30+24x
3x-24x=2+30+10
-21x=42
x=-2
8)2x+1-3(x-4)=4(3-x)
2x+1-3x+12=12-4x
2x-3x+4x=12-1-12
3x=-1/3
1. х = -2,6
2. х = 15
3. х = 1
4. х = 1,4
5. х = -1
6. х = -7,5
7. х = -2
8. х = 1
1. 9 - 4х = -9х - 4
-4х + 9х = -4 - 9
5х = -13
х = -13/5
х = -2,6
2.5(х - 3) = 4х
5х - 15 = 4х
5х - 4х = 15
х = 15
3. 7(-3 + 2х) = -6х - 1
-21 + 14х = -6х - 1
14х + 6х = 21 - 1
20х = 20
х = 20/20
х = 1
4. -4(5 - 4х) = х + 1
-20 + 16х = х + 1
16х - х = 20 + 1
15х = 21
х = 21/15
х = 1,4
5. 4 + 3(10х + 7) = -5
4 + 30х + 21 = -5
30х = -5 - 25
30х = -30
х = -30/30
х = -1
6. 10 - 2(-х - 7) = 9
10 + 2х + 14 = 9
2х = 9 - 24
2х = -15
х = -15/2
х = -7,5
7. 3х - 10 = 2 + 6(5 + 4х)
3х - 10 = 2 + 30 + 24х
3х - 24х = 32 + 10
-21х = 42
х = 42/(-21)
х = -2
8. -2х + 1 - 3(х - 4) = 4(3 - х)
-2х + 1 - 3х + 12 = 12 - 4х
-5х + 4х = 12 - 13
-х = -1
Copyright © 2025 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Ответ:
Пошаговое объяснение:
1)9x-4x=-9x-4
9x-4x+9x=-4
14x=-4
x=-3.5
2)5(x-3)=4x
5x-15=4x
5x-4x=15
x=15
3)7(-3+2x)=-6x-1
-21+14x=-6x-1
14x+6x=-1+21
20x=20
x=1
4)-4(5-4x)=x+1
-20+16x=x+1
16x-x=1+20
15x=21
x=1.4
5)4+3(10x+7)=-5
4+30x+21=-5
30x=-5-4-21
30x=-30
x=-1
6)10-2(-x-7)=9
10+2x+7=9
2x=9-10-7
x=-4
7)3x-10=2+6(5+4x)
3x-10=2+30+24x
3x-24x=2+30+10
-21x=42
x=-2
8)2x+1-3(x-4)=4(3-x)
2x+1-3x+12=12-4x
2x-3x+4x=12-1-12
3x=-1/3
Ответ:
1. х = -2,6
2. х = 15
3. х = 1
4. х = 1,4
5. х = -1
6. х = -7,5
7. х = -2
8. х = 1
Пошаговое объяснение:
1. 9 - 4х = -9х - 4
-4х + 9х = -4 - 9
5х = -13
х = -13/5
х = -2,6
2.5(х - 3) = 4х
5х - 15 = 4х
5х - 4х = 15
х = 15
3. 7(-3 + 2х) = -6х - 1
-21 + 14х = -6х - 1
14х + 6х = 21 - 1
20х = 20
х = 20/20
х = 1
4. -4(5 - 4х) = х + 1
-20 + 16х = х + 1
16х - х = 20 + 1
15х = 21
х = 21/15
х = 1,4
5. 4 + 3(10х + 7) = -5
4 + 30х + 21 = -5
30х = -5 - 25
30х = -30
х = -30/30
х = -1
6. 10 - 2(-х - 7) = 9
10 + 2х + 14 = 9
2х = 9 - 24
2х = -15
х = -15/2
х = -7,5
7. 3х - 10 = 2 + 6(5 + 4х)
3х - 10 = 2 + 30 + 24х
3х - 24х = 32 + 10
-21х = 42
х = 42/(-21)
х = -2
8. -2х + 1 - 3(х - 4) = 4(3 - х)
-2х + 1 - 3х + 12 = 12 - 4х
-5х + 4х = 12 - 13
-х = -1
х = 1