Answer:
1) x = 6
2) 129
Step-by-step explanation:
For equation 1:
[tex]7x=42\\\\\frac{7x=42}{7}\\\\ \boxed{x=6}[/tex]
Expression 2:
Apply PEMDAS Rule.
[tex]8^2+9((12/3)*2)-7\\\\8^2+9(4*2)-7\\\\8^2+9(8)-7\\\\64+9(8)-7\\\\64+72-7\\\\136-7\\\\\boxed{129}[/tex]
Hope this helps.
