The answer is 21. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
-2
4x plus 7 plus 3x equals 19 plus xx = 2
How about 2 plus 17 = 19 as one example
-2+19=17It equals positive 17.
25 + 2 = 27 27 - 19 = 8
2
-19 plus 144 equals 125.
X=2
(2, 3)
(3, 2)
x = 2, y = 1
21+21+19+19=80