18-3n+2=n+20-4n which is the solution 0 (0) or all reals

that is a true statment.

20 - 3n = -3n + 20

Step-by-step explanation:

add the numbers, collect the like terms.

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)