Question

-20-1,2y=31,7+3,5y=? -21-4x=63+3x=?

Answer 1

Ответ:21
Пошаговое объяснение:

Answer 2

Let's solve these equations step by step:

1. -20 - 1.2y = 31.7 + 3.5y

First, we can start by isolating the variables on one side and the constants on the other side:

-20 - 1.2y - 3.5y = 31.7

Now, combine like terms on the left side:

-4.7y - 20 = 31.7

Next, add 20 to both sides to isolate the variable term:

-4.7y = 51.7

Finally, divide both sides by -4.7 to solve for y:

y = 51.7 / -4.7 ≈ -11.02 (rounded to two decimal places)

So, y is approximately equal to -11.02.

2. -21 - 4x = 63 + 3x

Let's isolate the variable x:

-21 - 4x - 3x = 63

Combine like terms on the left side:

-7x - 21 = 63

Now, add 21 to both sides:

-7x = 63 + 21

-7x = 84

Finally, divide both sides by -7 to solve for x:

x = 84 / -7 = -12

So, x is equal to -12.