Question

Tentukan penyelesaian PLSV sbg!
1. 5-2y=117
2. 5y - 7=2y +8
3. 3 (m-1)+5=m+10
4. 3(у-5)+2=y+7
5. 17-3 (x+ll) = x+12
6. 19-3 (2р-5) = 2 (1+р)
7. 2(3x-5)+7= 4 (1+x) + 13
8. 5 (x-3)-2(x + 1) = x+3
9. 2(3x+5)-2(7x-3)= x+7

tolong dijawab dengan cara ya kak, makasih bangett​

Answer 1

Jawaban:

Lelah

1. 5 - 2y = 117

-2y = 117 - 5

-2y = 112

y = 112 / -2

y = -56

2. 5y - 7 = 2y + 8

5y - 2y = 8 + 7

3y = 15

y = 15 / 3

y = 5

3. 3(m - 1) + 5 = m + 10

3m - 3 + 5 = m + 10

3m - m = 10 + 3 - 5

2m = 8

m = 8 / 2

m = 4

4. 3(y - 5) + 2 = y + 7

3y - 15 + 2 = y + 7

3y - y = 7 + 15 - 2

2y = 20

y = 20 / 2

y = 10

5. 17 - 3(x + 11) = x + 12

17 - 3x - 33 = x + 12

-3x - x = 12 + 33 - 17

-4x = 28

x = 28 / -4

x = -7

6. 19 - 3(2p - 5) = 2(1 + p)

19 - 6p + 15 = 2 + 2p

-6p - 2p = 2 - 19 - 15

-8p = -32

p = -32 / -8

p = 4

7. 2(3x - 5) + 7 = 4(1 + x) + 13

6x - 10 + 7 = 4 + 4x + 13

6x - 4x = 4 + 13 + 10 - 7

2x = 20

x = 20 / 2

x = 10

8. 5(x - 3) - 2(x + 1) = x + 3

5x - 15 - 2x - 2 = x + 3

5x - 2x - x = 3 + 15 + 2

2x = 20

x = 20 / 2

x = 10

9. 2(3x + 5) - 2(7x - 3) = x + 7

6x + 10 - 14x + 6 = x + 7

6x - 14x - x = 7 - 10 - 6

-9x = -9

x = -9 / -9

x = 1

Jadi, penyelesaian dari masing-masing persamaan adalah y = -56, y = 5, m = 4, y = 10, x = -7, p = 4, x = 10, x = 10, dan x = 1.