Which expression has a value of 23?

a.
7 – (–16)

b.
–3 – 20

c.
10 – 13

d.
–18 – (–5)

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)

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.

a=24; b=12

step-by-step explanation:

a/b=2: 1

a=2b

36/(1+2)=12

b=12

a=24