1)13520/(х/40)+67=80. 2)10365-(х*816)*3=573

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To solve the first equation, we can start by isolating the term with the variable x.

13520 / (x/40) = 13
(x/40) = 13520 / 13
(x/40) = 1040
x = 1040 * 40
x = 41600

Therefore, the solution to the first equation is x = 41600.

To solve the second equation, we can simplify it by first performing the multiplication inside the parentheses.

10365 - (x 816) 3 = 573
10365 - 2448x = 573

Next, we isolate the term with the variable x by moving 10365 to the other side of the equation.

-2448x = 573 - 10365
-2448x = -9832
x = -9832 / -2448
x = 4

Therefore, the solution to the second equation is x = 4.