Question

Tentukan himpunan penyelesaian dari :
a. 2(x+8) = 18
b. 1/2(x-5) = 2(x + 6)

Answer 1

A. 2(x+8) =18
     2x+16=18
     2x=18-16
     2x=2
     x=2-2
     x=0

Answer 2

A) 2(x+8) = 18
2x+16 = 18
2x = 18-16
2x = 2
x = 1

b) ½(x-5) = 2(x+6)
0,5(x-5) = 2(x+6)
0,5x-2,5 = 2x+12
0,5x-2x = 12+2,5
-1,5x = 14,5 >>>>>> x 10
-15x = 145
x = -145/15
x = - 29/3
x = - 9 2/3