7=3/a(x+5) nyatakan persamaan dengan x

Bab Aljabar Dasar
Matematika SMP Kelas VII

7 = 3/(a (x + 5)
7a (x + 5) = 3
x + 5 = (3/7a)
x = (3/7a) - 5
x = (3 - 35a)/7a

7 = 3/a(x + 5)
a(x + 5) = 3/7
x + 5 = (3/7)/a
x + 5 = (3/7) × (1/a)
x + 5 = 3/7a
x = 3/7a - 5
x = 3/7a - 35a/7a
........3 - 35a
x = ------------
............7a