Question

А) 42x-28x+180=660 б) 7y-y+27=99

Answer 1

Ответ:

а) 42x-28x=660-180

14x=480

x=480:14

x≈34,3

б)7у-у=99-27

6у=72

у=72:6

у=12

Answer 2

To solve the equations, let's go step by step:

a) 42x - 28x + 180 = 660

To solve this equation, we'll combine like terms:

14x + 180 = 660

Next, we'll isolate the variable x by subtracting 180 from both sides:

14x = 660 - 180

14x = 480

Now, we'll divide both sides of the equation by 14 to solve for x:

x = 480 / 14

x ≈ 34.29

Therefore, the solution to the equation is x ≈ 34.29.

b) 7y - y + 27 = 99

Again, we'll combine like terms:

6y + 27 = 99

To isolate the variable y, we'll subtract 27 from both sides:

6y = 99 - 27

6y = 72

Dividing both sides by 6:

y = 72 / 6

y = 12

So, the solution to the equation is y = 12.