Find the value of X and Y: 3x+9y=30 2(3x+9y)+x=64

pls help.

x = 4 , y = 2

Step-by-step explanation:

3x+9y = 30 (1)

2(3x+9y)+x = 64 (2)

substitute (1) into (2)

2(30)+x = 64

60+x = 64

x = 64-60

x = 4

substitute x=4 into (1)

3x+9y = 30

3(4)+9y = 30

12+9y = 30

9y = 30-12

9y = 18

y = 18/9

y = 2

thus, x = 4 and y = 2

x + 107

step-by-step explanation:

let's say that the number he had before the mistake was x. then, he will have 107 dollars more than this, so the answer is x + 107.