Question

1,4y-0,8=1,2y 1,7-1,3a=-0,1-0,3a 1,1y+8=0,3y

Answer 1

1) 1,4у-0,8=1,2у

1,4у-1,2у=0,8

0,2у=0,8

у=4

2) 1,7-1,3а=-0,1-0,3а

-1,3а+0,3а=-0,1-1,7

-1а=-1,8

а=1,8

3) 1,1у+8=0,3у

1,1у-0,3у=-8

0,8у=-8

у=-10

Answer 2

To solve these equations, we need to isolate the variable (y or a) on one side of the equation. Let's solve each equation step by step:

1. $1.4y - 0.8 = 1.2y$

First, let's move all the terms containing y to one side and constants to the other side:

$1.4y - 1.2y = 0.8$

Now, combine the y terms:

$0.2y = 0.8$

Next, isolate y by dividing both sides by 0.2:

$y = \frac{0.8}{0.2}$

$y = 4$

So, the solution for y is $y = 4$.

2. $1.7 - 1.3a = -0.1 - 0.3a$

First, let's move all the terms containing a to one side and constants to the other side:

$1.7 + 0.1 = 1.3a - 0.3a$

Now, combine the a terms:

$1.8 = 1a$

Simplify further:

$a = 1.8$

So, the solution for a is $a = 1.8$.

3. $1.1y + 8 = 0.3y$

First, let's move all the terms containing y to one side and constants to the other side:

$1.1y - 0.3y = -8$

Now, combine the y terms:

$0.8y = -8$

Next, isolate y by dividing both sides by 0.8:

$y = \frac{-8}{0.8}$

$y = -10$

So, the solution for y is $y = -10$.

To summarize: $y = 4$ $a = 1.8$ $y = -10$