Penjelasan dengan langkah-langkah:
3) a. 2(x + 3) = 11
2x + 6 = 11
2x = 11-6
x = 5/2
b. 3(x - 2) + 5 = 2(x - 5)
3x - 6 + 5 = 2x - 10
3x - 2x = -10 -5 + 6
x = -9
c. 4(x + 5) = 5(x - 2) + 7
4x + 20 = 5x - 10 + 7
5x -4x = 20 + 10 -7
x = 23
d. 3x -2(x + 4) = 2(x - 3) - 4
3x -2x -8 = 2x -6 -4
x -8 = 2x -10
2x -x = -8 + 10
x = 2
4) a. 1/2x + 4 = x - 5
1/2x = x -5 -4
x -1/2x = 5+4
1/2x = 9
x = 9 x 2 = 18
b. x/3 -2 = x/2 -1
x/2 -x/3 = -2 + 1
3x/6 -2x/6 = -1
x/6 = -1
x = -1 x 6
x = -6
c. (4-x)/3 = (2x-3)/ 4
(4-x) × 4 = (2x-3) × 3
16-4x = 6x-9
6x+4x = 16+9
10x = 25
x = 25/10 = 2,5
d. soalnya ngg kebaca
