Question

17. 12 — 7x = 16x + 3 18. 5x-11 = 2x+7 19. 2х-11 = 17+3х+50

Answer 1

Ответ:

Пошаговое объяснение:

17. 12 — 7x = 16x + 3

-7х-16х=3-12

-23х=-9

х=-9:(-23)

х=9/23

18. 5x-11 = 2x+7

5х-2х=7+11

3х=18

х=18:3

х=6

19. 2х-11 = 17+3х+50

2х-3х=50+17+11

-х=78

х=-78

Answer 2

Let's solve the given equations step by step:

17. 12 - 7x = 16x + 3:

First, let's simplify the equation by combining like terms:

12 + 3 = 16x + 7x

15 = 23x

To isolate x, divide both sides of the equation by 23:

15/23 = x

So the solution to the equation is x ≈ 0.6522.

18. 5x - 11 = 2x + 7:

To solve this equation, we'll isolate x on one side of the equation:

Subtract 2x from both sides:

5x - 2x - 11 = 7

3x - 11 = 7

Next, add 11 to both sides:

3x = 18

Divide both sides by 3 to solve for x:

x = 6

So the solution to the equation is x = 6.

19. 2x - 11 = 17 + 3x + 50:

Let's simplify the equation by combining like terms:

2x - 11 = 3x + 67

To isolate x, subtract 3x from both sides:

2x - 3x - 11 = 67

-1x - 11 = 67

Next, add 11 to both sides:

-1x = 78

Finally, multiply both sides by -1 to solve for x:

x = -78

So the solution to the equation is x = -78.