3(x+1) + 1 + 2x = 2(2x + 2) + x

Any value of  x

makes the equation true.

All real numbers

Interval Notation:

( − ∞ , ∞ )

true

Step-by-step explanation:

3x+3+1+2x=4x+4+x (distrbute prob)

5x+4=5x+4 (collect terms)

this statement is true becasue they equal to each other.

7

step-by-step explanation:

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)