To solve the first equation, we first simplify the left side2(3у + 9) = 23у + 2*= 6у + 18
Now the equation becomes6y + 18 - 5y = 349y + 18 = 349y = 3478
Now we substitute y = 3478 into the second equation45y + 4(25 - 7y) = 16453478 + 4(25 - 73478) = 16156510 + 4(25 - 24346) = 16156510 + 4(-24321) = 16156510 - 97284 = 1659226 = 168
So, the solution is y = 3478.
To solve the first equation, we first simplify the left side
2(3у + 9) = 23у + 2*
= 6у + 18
Now the equation becomes
6y + 18 - 5y = 349
y + 18 = 349
y = 3478
Now we substitute y = 3478 into the second equation
45y + 4(25 - 7y) = 16
453478 + 4(25 - 73478) = 16
156510 + 4(25 - 24346) = 16
156510 + 4(-24321) = 16
156510 - 97284 = 16
59226 = 168
So, the solution is y = 3478.