Question

3(u+5) = 3- u hasilnya adalah

Answer 1

3(u+5) = 3-u
3x+15=3-u
3x+x=3-15
4x=-12
x=-12 bagi 4 =-3

Answer 2

⇔ 3u + 15 = 3 - u
⇔ 3u + u + 15 = 3 - u + u
⇔ 4u + 15 - 15 = 3 + 15
⇔ 4u/4 = 18/4
⇔ u = 4,5