algerbra!
posted by lauren .
7(n+1)4n=4
wut is n
7(x3)=14
wut is x
8=3+5(y2)
wut is y
2(x3)+3(x1)=5

7(n+1)4n=4
Distribute the 7: 7n+74n=4
Combine like terms (n): 3n+7=4
Subtract the 7 on both sides: 3n=3
Divide by 3: n=1
8=3+5(y2)
Distribute the 5: 8=3+5y10
Subtract: 8=7+5y
Add the 7 to the other side: 15=5y
Divide by 5: y=3
2(x3)+3(x1)=5
Distribute both terms: 2x6+3x3=5
Subtract and add: 5x9=5
Add 9: 5x=4
Divide by 5: x=4/5 
7(n+1)4n=4
7n + 7  4n = 4
3n = 3
n = 1
7(x3)=14
7x + 21 = 14
7x = 35
x=5
8=3+5(y2)
8 = 3 + 5y  10
15=5y
y=3
2(x3)+3(x1)=5
2x 6 + 3x  3 = 5
5x = 4
x= 4/5