Change the subtraction problem to addition
1- (-3)

1+3

Step-by-step explanation:

Since there is two minus signs, you can turn the minus sign to addition and turn the negative sign positive. Subtracting a negative is the same as adding a positive.

in mathematics, a constraint is a condition of an optimization problem that the solution must satisfy. there are several types of constraints—primarily equality constraints, inequality constraints, and integer constraints. the set of candidate solutions that satisfy all constraints is called the feasible set.

hoped i'm right lol

can you complete your sentence? i could !