Question

Tentukan himpunan penyelesaian dari setiap persamaan berikut.
A. 5y - 7 = 2y + 8
B. 3(y - 5) + 2 = y + 7
C.19 - 3(2p - 5) = 2(1 + p
D. 3x + 2. 4x - 3
------- = -------
4 5

E. 3m - 1 m + 3
------- = ------- = 1
3 4

Answer 1

A. 5y - 2y = 8 + 7
3y = 15
y = 15 : 3 = 5
b. 3y - 15 + 2 = y + 7
3y - y = 7 + 15 - 2
2y = 20
y = 20: 2 = 10
c. 19 - 6p + 15 = 2 + 2p
-6p - 2p = 2 - 19 -15
-8p = -32
p = 4
d. 3x + 8x -3 = 45
11x = 45 + 3
x = 48 : 11