Question

Diketahui 2/3(6x-9) = 1/2(4x+8).nilai x +10 adalah...
a.14 c.18
b.15 d.20

Answer 1

2/3 (6x-9) = 1/2 (4x+8)
kedua ruas dikalikan dg 6, menjadi :
2.2(6x-9) = 3.1(4x+8)
4(6x-9) = 3(4x+8)
24x-36 = 12x+24
24x-12x = 24+36
12x = 60
x = 60/12
x = 5
maka,
nilai x+10 = 5+10 = 15 ... (b)