Question

1. 5х+2=18-3х 2. 5х+0,9=3(х+1,5) 3. -3(2х-0,8)=2(х+3,6)

Answer 1

1. 5х+3х=18-2
8х=16
х=2
2. 5х-3х=4,5-0,9
2х=3,6
х=1,8
3. -6х+2,4=2х+7,2
-8х=4,8
х= -0,6

Answer 2

To solve each of these equations, follow these steps:

1. 5x + 2 = 18 - 3x

To solve for x, first, gather all the x terms on one side and the constant terms on the other side of the equation:

5x + 3x = 18 - 2

Combine like terms:

8x = 16

Now, isolate x by dividing both sides by 8:

x = 16 / 8

x = 2

So the solution to the equation is x = 2.

2. 5x + 0.9 = 3(x + 1.5)

First, distribute the 3 on the right side:

5x + 0.9 = 3x + 3 * 1.5

5x + 0.9 = 3x + 4.5

Now, move all the x terms to one side and constant terms to the other side:

5x - 3x = 4.5 - 0.9

Combine like terms:

2x = 3.6

Now, isolate x by dividing both sides by 2:

x = 3.6 / 2

x = 1.8

So the solution to the equation is x = 1.8.

3. -3(2x - 0.8) = 2(x + 3.6)

First, distribute the -3 and the 2 on the right side:

-6x + 2.4 = 2x + 7.2

Now, move all the x terms to one side and constant terms to the other side:

-6x - 2x = 7.2 - 2.4

Combine like terms:

-8x = 4.8

Now, isolate x by dividing both sides by -8:

x = 4.8 / -8

x = -0.6

So the solution to the equation is x = -0.6.