5х – 4 y = -10
3х + 2y = 16

x= 2, y= 5

Step-by-step explanation:

5x -4y= -10 (1)

3x +2y= 16 (2)

(2) ×2:

6x +4y= 32 (3)

(1) +(3):

5x -4y +6x +4y= -10 +32

11x= 22

x= 22 ÷11 (÷11 on both sides)

x= 2

Substitute x= 2 into (2):

3(2) +2y= 16

6 +2y= 16

2y= 16 -6

2y= 10

y= 10 ÷2

y= 5

hello, there is a new name in town and that's the human spider!

answer: d.) the total number of protons and neutrons is 15

merry christmas!

~

your friendly neighborhood human spider! .