Question

4) 144:(x-3)=365)21•(y-8)=846)(x+67): 18=4​

Answer 1

Відповідь:144:(х-3)=36

x-3=144/36

x-3=4

x=4+3

x=7

21×(у-8)=84

21y-168=84

21y=84+168

21y=252

y=12

(х+67):18=4

x+67=4*18

x+67=72

x=72-67

x=5

Answer 2

To solve this system of equations for x and y, you can follow these steps:

1. Start by solving the first equation:

144 / (x - 3) = 36

Multiply both sides of the equation by (x - 3) to isolate the variable on one side:

144 = 36(x - 3)

2. Now, distribute 36 on the right side of the equation:

144 = 36x - 108

3. Add 108 to both sides to isolate the term with x:

144 + 108 = 36x

252 = 36x

4. Divide both sides by 36 to solve for x:

x = 252 / 36

x = 7

Now that we have found the value of x, you can substitute it into the second equation:

21 * (y - 8) = 84

5. Divide both sides by 21 to isolate the variable term:

(y - 8) = 4

6. Add 8 to both sides to solve for y:

y = 4 + 8

y = 12

So, the solution to the system of equations is:

x = 7 y = 12