The value of x in this system of equations is 1.3x + y = 9y = –4x + 10substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9–x + 10 = 9–x = –1x = 1what is the value of y?

3x + y = 9

y = –4x + 10

First we will substitute y= -4x+10 in the first equation in place of 'y'

3x + (-4x+10)= 9

⇒3x -4x +10 = 9

⇒ -1x +10 =9

⇒ -1x = -1

⇒ x = -1/-1 = 1

⇒ x= 1

Now, for finding the value of y , we will plug x=1 into the second equation.

y= -4x +10

y= -4(1) +10

y= -4 +10

y= 6

So, the value of y is 6 .

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870