Question

1)27+x+63=100.2)(x-9)+20=56.3)8x+2x+3x=130

Answer 1

1) 27+x+63=100
   90+x=100
    x=10
2) (x-9)+20=56
    x+11=56
    x=45
3) 8x+2x+3x=130
   13x=130
    x=10

Answer 2

Let's solve each of these equations step by step:

1. 27 + x + 63 = 100

To solve for x, first combine like terms on the left side of the equation:

27 + 63 = 90

So the equation becomes:

x + 90 = 100

Now, subtract 90 from both sides to isolate x:

x = 100 - 90 x = 10

So the solution to this equation is x = 10.

2. (x - 9) + 20 = 56

First, combine the constants on the left side of the equation:

(x - 9) + 20 = 56 x - 9 + 20 = 56

Now, add 9 to both sides to isolate x:

x - 9 + 9 + 20 = 56 + 9 x + 20 = 65

Next, subtract 20 from both sides to solve for x:

x + 20 - 20 = 65 - 20 x = 45

So the solution to this equation is x = 45.

3. 8x + 2x + 3x = 130

Combine like terms on the left side of the equation:

8x + 2x + 3x = 13x

So the equation becomes:

13x = 130

To solve for x, divide both sides by 13:

(13x) / 13 = 130 / 13 x = 10

So the solution to this equation is x = 10.