Question

1)15-46=18-x2)31-2x=24+9x3)2y+15=9-y4)7m+1=8m+9​

Answer 1

Ответ:

1.х=18-15+40

х=43

2.-2х-9х=-31-24

-11х=-55

х=5

3.2у+у=-15-9

3у=-24

у=-8

4.7m-8m=9-1

-m=8

m=-8

Пошаговое объяснение:

Answer 2

Let's solve each of the given equations one by one:

1. 15 - 46 = 18 - x

To solve for x, we'll simplify both sides of the equation:

-31 = 18 - x

Next, let's isolate x by moving the constants to one side and the variable term to the other side:

-31 - 18 = -x

-49 = -x

To get x by itself, we'll multiply both sides by -1 (or multiply by -1):

49 = x

Therefore, x = 49.

2. 31 - 2x = 24 + 9x

Let's simplify the equation by combining like terms:

-2x - 9x = 24 - 31

-11x = -7

To solve for x, we'll divide both sides of the equation by -11:

x = (-7) / (-11)

Simplifying further, we get:

x ≈ 0.6364 (rounded to four decimal places)

3. 2y + 15 = 9 - y

To solve for y, we'll simplify the equation:

2y + y = 9 - 15

3y = -6

Dividing both sides by 3 gives us:

y = -6 / 3

Simplifying further, we find:

y = -2

4. 7m + 1 = 8m + 9

Let's simplify the equation by combining like terms:

7m - 8m = 9 - 1

-m = 8

To solve for m, we'll multiply both sides of the equation by -1 (or multiply by -1):

m = -8

Therefore, the solution to the equation is m = -8.