Question

(8х+3)-(10х+6) 2.8-х=8*(х+2.8

Answer 1

1. (8х+3)-(10х+6)=8х+3-10х-6=-3-2х=-(3+2х)

2. 2,8-х=8*(х+2,8)

2,8-х=8х+22,4

-9х=19,6

х=-2,18

Answer 2

Let's solve each equation step by step:

1. Simplify (8x + 3) - (10x + 6): To simplify this expression, distribute the negative sign through the parentheses:

(8x + 3) - (10x + 6) = 8x + 3 - 10x - 6

Next, combine like terms:

8x - 10x = -2x 3 - 6 = -3

So, the simplified expression is: -2x - 3.

2. Solve 2.8 - x = 8 * (x + 2.8):

To solve this equation, first distribute the 8 through the parentheses:

2.8 - x = 8x + 8 * 2.8

Now, combine like terms:

2.8 - x = 8x + 22.4

Next, isolate the variable x on one side of the equation. Let's move the x terms to the left side by adding x to both sides:

2.8 - x + x = 8x + 22.4 + x

2.8 = 9x + 22.4

Now, isolate x by moving the constant term to the right side. Let's subtract 22.4 from both sides:

2.8 - 22.4 = 9x + 22.4 - 22.4

-19.6 = 9x

Finally, divide by 9 to solve for x:

x = -19.6 / 9 x ≈ -2.18 (rounded to two decimal places).

So the solution for the second equation is x ≈ -2.18.

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