Question

514. 1) (-40,5 - 39,5) + x = 18,3; 2) x + (21,8 - 30) = 1,2; 3) (79,7 - 100) - x = 29; 4) (-0,289,82) - x -6,11.​

Answer 1

Відповідь:

Покрокове пояснення:

1) (-40,5 - 39,5)+х=18,3;

-80+х=18,3;

х=18,3+80;

х=98,3.

2) х+(21,8+30)=1,2;

х+51,8=1,2;

х=1,2-51,8;

х=-50,6.

3) (79,7-100)-х=29;

-20,3-х=29;

х=29+20,3;

х=49,3.

4) (-0,28982)-х=6,11;

х=6,11+0,28982;

х=6,39982.

Answer 2

To solve these equations, let's simplify and solve for x step by step:

1. (-40.5 - 39.5) + x = 18.3

Start by simplifying the left side of the equation:

-80 + x = 18.3

Next, isolate x by subtracting -80 from both sides:

x = 18.3 + 80

x = 98.3

Therefore, the solution to the first equation is x = 98.3.

2. x + (21.8 - 30) = 1.2

Begin by simplifying the parentheses:

x - 8.2 = 1.2

Next, isolate x by adding 8.2 to both sides:

x = 1.2 + 8.2

x = 9.4

Therefore, the solution to the second equation is x = 9.4.

3. (79.7 - 100) - x = 29

Simplify the left side:

-20.3 - x = 29

Next, isolate x by adding 20.3 to both sides:

-x = 29 + 20.3

-x = 49.3

To solve for x, multiply both sides by -1 (to remove the negative sign):

x = -49.3

So, the solution to the third equation is x = -49.3.

4. (-0.289,82) - x - 6.11

It seems there might be a formatting error in this equation. Could you please clarify the correct format or provide more information so I can assist you further?