Answer:
x = 20 and n = 2
Step-by-step explanation:
a.
10 less than 3 times x is written as 3x - 10, thus
3x - 10 = 50 ( add 10 to both sides )
3x = 60 ( divide both sides by 3 )
x = 20
b.
5 times n is 5n, thus the sum is
n + 5n = 12 ( combine terms on left side )
6n = 12 ( divide both sides by 6 )
n = 2
