tentukan hasil dari a) 15+×=9 b) 5×=4×-10 c) x+6=2x+11 d) 5x-2=6x+5 e) 15=3x+3

a). 15 + x = 9
=> x = 9 - 15
=> x = -6

b). 5x = 4x - 10
=> 5x - 4x = -10
=> x = -10

c). x + 6 = 2x + 11
=> x - 2x = -6 + 11
=> -x = 5
=> x = -5

d). 5x - 2 = 6x + 5
=> 5x - 6x = 2 + 5
=> -x = 7
=> x = -7

e). 15 = 3x + 3
=> 15 - 3 = 3x
=> 12 = 3x
=> x = 12/3
=> x = 4

a)
15 + x = 9
x = 9 - 15
x = -6

b)
5x = 4x - 10
5x - 4x = -10
x = -10

c)
x + 6 = 2x + 11
x - 2x = 11 - 6
-x = 5
 x= -5

d)
15 = 3x + 3
15 - 3 = 3x
12 : 3 = x
4 = x