Answer:
[tex]y = 35[/tex]
[tex] {(5y + 3)}^{o} = {(5 \times 15 + 3) }^{o} = {78}^{o}[/tex]
[tex] {(4y + 8)}^{o} = {(4 \times 15 + 8)}^{o} = {68}^{o} [/tex]
Step-by-step explanation:
[tex](5y + 3) + (4y + 8) = 146 \\ 9y + 11 = 146 \\ 9y = 146 - 11 \\ 9y = 135 \\ y = 15[/tex]
