Step-by-step explanation:
The answer to the first one is: 4cd+4b.
The answer to the second one is: 2ab+4a+7b+14
(I'm assuming that you want to simplify)
Answer:
$8.50/h
x+y=63
x=y+23
y+23+y =63
2y +23 = 63
2y =40
y=40/2 =20
y = 20
x = 20+23=43
the numbers are 20 & 43
a is the answer
