Algebra
posted by Kelly .
please help me solve my homework with all the work involved. i have trouble paying attention in class so it's hard for me to do my homework. here are a few of the questions. I need to find out what the letters equal.
1.) 10(4+y)=2y
2.)9(b4)7b=5(3b2)
3.)(8n2)=3+10(13n)
4.)1/4(60+16s)=15+4s
Thank you a lot.

I'll do two of them for you. Which two would you like me to do?

The first two please

10(4+y)=2y
40 + 10y = 2y
40 = 2y  10y
40 = 8y
40/8 = y
5 = y
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9(b4)7b=5(3b2)
9b  36  7b = 15b  10
2b  15b = 36  10
13b = 26
b = 2