It looks to me like your instinct is correct.
What I see is an equation with no variables and no unknowns, only
numbers, and the statement made by the equation is not true.
The left side of the equation is 2 x 42 = 84 .
The right side of the equation is 64 + 34 = 98 .
The equation says that these two quantities are equal, but they're not.
