Last updated at Dec. 16, 2024 by Teachoo
Example 5 Solve: (a) 3n + 7 = 253n + 7 = 25 Subtracting 7 from both sides. 3n + 7 − 7 = 25 − 7 3n + 7 − 7 = 25 − 7 Dividing 3 both sides 3𝑛/3 = 18/3 n = 6 3n + 7 = 25 Subtracting 7 from both sides. 3n + 7 − 7 = 25 − 7 3n + 7 − 7 = 25 − 7 Dividing 3 both sides 3𝑛/3 = 18/3 n = 6