suatu fungsi dirumuskan f(x)=12x+2 jika f(a) 50 nilai a...

f(a)=12a+2=50
12a=50-2
12a=48
a=48/12=4

f (a) = 50
12 a + 2 = 50
12 a = 50 - 2
12 a = 48
a = 48 ÷ 12
a = 4