Solve for b
ab + c = d

b = (d-c)/a

Step-by-step explanation:

ab + c = d

ab=d-c

b = (d-c)/a

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)