Batuin ya plis ok oke
1). 2x = 14
x = 14/2
x = 7
2). 3/4 x = -3/8
x = -3/8 x 4/3
x = -1/2
3). 2y + 5 = 27
2y = 27 – 5
2y = 22
y = 22/2
y = 11
4). 4x – 8 = 6x + 12
4x – 6x = 12 + 8
-2x = 20
x = 20/-2
x = -10
5). 2 ( x + 3) + 3 ( x – 4) = 9
2x + 6 + 3x – 12 = 9
2x + 3x = 9 – 6 +12
5x = 15
x = 15/5
x = 3
6). 5y – 3 ( 2y – 6 ) = 2 ( 3y – 10 )
10y² – 30y – 6y + 18 = 6y – 20
10y² – 36y + 18 = 6y-20
10y² – 36y – 6y = -20 -18
10 y² – 42y = -38
7). x – 5 = 2
x = 2+5
x = 7
8). 2p = -10
p = -10/2
p = -5
9). 1/2 ( 4q – 5 ) = q + 5 1/4
2q – 5/2 = q + 21/4
2q -q = 21/4 + 5/2
q = 31/4
q = 7 3/4
10). 3/4 ( x + 3 ) + 1/2 ( x – 1) = 0
3/4x + 9/4 + 1/2x – 1/2 =0
3/4x + 1/2x = -9/4 + 1/2
5/4x = -7/4
x = -7/4 x 4/5
x = -7/5
11). 1/2 (4-n) -1/3 (1 + n) = 0
2-1/2n - 1/3 – 1/3n = 0
-1/2n – 1/3n = -2 + 1/3
-5/6n = -5/3
n = -5/3 x -6/5
n = 6/3
n = 2
12). 6,2x – 2,1 = 5,3
6,2x = 5,3 + 2,1
6,2x = 7,4
x = 7,4/ 6,2
x = 1,2
13).
no.6 sama 13 belum ya…