Решите уравнение
1. 8х – 8 = 20 – 6х
2. (7х + 1) – (9х + 3) = 16
1. 9 – 4х = 3х – 40
2. 2,7 + 3х = 9(х – 2,1)
1. 4х = 24 + х
2. (5х + 8) – (8х + 14) = 9
1. 4,7 – 1,1х = 0,5х – 3,3
2. 4(х – 1) + 2 = 10 – 2(х – 6)
1. 8х – 8 = 20 – 6х
2. (7х + 1) – (9х + 3) = 16
1. 9 – 4х = 3х – 40
2. 2,7 + 3х = 9(х – 2,1)
1. 4х = 24 + х
2. (5х + 8) – (8х + 14) = 9
1. 4,7 – 1,1х = 0,5х – 3,3
2. 4(х – 1) + 2 = 10 – 2(х – 6)
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Ответ:
1. 8x-8=20-6x
8x+6x=20+8
14x=28
x=2
2. (7x+1)-(9x+3)=16
7x+1-9x-3=16
-2x=16-1+3
-2x=18
-x=9
x=-9
3. 9-4x=3x-40
-4x-3x=-40-9
-7x=-49
-x=7
x=-7
4. 2,7+3x=9(x-2,1)
2,7+3x=9x-18,9
3x-9x=-18,9-2,7
-6x=-21,6
6x=21,6
x=3,6
5. 4x=24+x
4x-x=24
3x=24
x=8
6.(5x+8)-(8x+14)=9
5x+8-8x-14=9
-3x=9-8+14
-3x=15
-x=-5
x=5
7. 4,7-1,1x=0,5x-3,3
-1,1x-0,5x=-4,7-3,3
-1,6x=-8
-x=5
x=-5
8. 4(x-1)+2=10-2(x-6)
4x-4+2=10-(2x-12)
4x-2=10-2x+12
4x+2x=10+12+2
6x=24
x=4
Пошаговое объяснение: