Diketahui fungsi f(x)=3x+6,f(2)=a,f(b)=21.tentukan hasil dari a+b!

langsung aja y

f(2) = 3(2) + 6
a = 6 + 6
a = 12

f(b) = 3(b) + 6
21 = 3b + 6
3b = 21 - 6
3b = 15
b = 5

a + b
12 + 5
17 ← jwb

semoga berguna +_+

f(x) = 3x + 6
f(2) = 3(2) + 6 = a
a = 6+6
a = 12

f(b) = 3(b) + 6 = 21
3b = 21 - 6
3b = 15
b = 5

Maka a + b
= 12 + 5
= 17