y-13 / y-7
cross multiply
y-13 = y-7
collect like terms
y+y =-7+13
2y= 13 -7
2y = 6
divide both sides by 2
2y/ 2y = 6/2
y= 3
I hope this helped
(a+b)^7= a^7+ 7a^7b+ 21 a^6b²+ 35a^5b³+ 35 a⁴b⁴+ 21 a³b^5 + 7a²b^6 + b^7
Answer:
D
Step-by-step explanation: