Answer:
n - 3
Step-by-step explanation:
The sister is 3 years younger, that doesn't change. The brother's age doesn't matter.
2/5
0.4 = 4/10 which in simplest form is 2/5
7 * x + 3 < 23
blah blah blah blah blah
3kh - 12.4h
h(3k-12.4)
= h(3k) - h(12.4)
= 3kh - 12.4h
Answer:-46
Step-by-step explanation: just took test