[tex]4x + 2(3\cdot7) = ?[/tex]
Now we must solve this equation if x = 5. To do so we must substitute:
[tex]4(5)+2(3\cdot7)\\[/tex]
Using PEMDAS we will solve for the parenthesis first.
[tex]4(5)+2(21)[/tex]
Multiply:
[tex]20+(42)[/tex]
Add:
[tex]20+42=62[/tex]
Final answer: 62
