How do I interpret this equation 5+1x10= is the answer 15 or 60?

Given:
${\displaystyle 5+1\times 10}$
When an expression contains both a sum a product without any brackets, then we always need to perform the product before performing the sum. This is thus equivalent with placing brackets about the product.
${\displaystyle =5+(1\times 10)}$
Let us evaluate the product using that the product of 1 and 10 is 10.
=5+10
Next, we evaluate the sum using that the sum of 5 and 10 is 15:
=15
Thus the answer to the equation is 15.
Result:
15