Father = x
son = y
x-5 = 7(y-5)
x +5 = 3(y+5) solve the system

x-5 = 7y-35
x+5 = 3y +15

x-5 = 7y-35
-x-5 = -3y -15
-10 = 4y -50
+50 +50
40 = 4y
10 = y

Solve for X
x+5 = 3(10) + 15
x+5 = 45
x = 40

The father is 40yrs old and the son is 10yrs old.

5 0

3 years ago

(x – 10) + (3x – 6) =<br> please someone help?

lyudmila [28]

Answer:

4x-4

Step-by-step explanation:

x-10+3x+6=4x-4

Hope helps :3

7 0

3 years ago

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20-4(4-3x)-7x=16-2(7-4x)

maria [59]

$20-4(4-3x)-7x=16-2(7-4x) \\ \\ 20-16+12x-7x =16 -14+8x \\ \\ 4 +5x =2 +8x \\ \\ 5x-8x=2-4 \\ \\ -3x=-2 \\ \\ 3x=2 \\ \\ \boxed{x=\frac{2}{3}}$

8 0

3 years ago

Jordan has 10 friends in the school band. The number of his friends who play the saxophone is shown in the grid. Use the grid to

slava [35]

Jordan needs 10 copies of the squares to have 100
With that, there will be 30 shades squares
So 30% of Jordan’s friends play sax

7 0

4 years ago

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