Answer:
x=4.5
Step-by-step explanation:
[tex](6x + 9) + 54 = 90 \\ 6x + 9 = 90 - 54 \\ 6x + 9 = 36 - 9 \\ \frac{6x}{6} = \frac{27}{6} \\ x = 4.5[/tex]
Checking:
[tex](6(4.5) + 9) + 54 = 90 \\ (27 + 9) + 54 = 90 \\ (36) + 54 = 90 \\ 90 = 90[/tex]
PA BRAINLIEST PO
