Question

15x−(−117,5)−10x+7x=−62,5−3x

Answer 1

Ответ:

15x−(−117,5)−10x+7x=−62,5−3x

15x−10x+7x+3x=-117,5-62,5

15х=-180

х=-180/15

х=-12

Answer 2

15x-(-117,5)-10x+7x=-62,5-3x

(раскрываем скобки)

15x+117,5-10x+7x=-62,5-3x

(теперь слагаемые с х влево, а числа вправо)

15x-10x+7x+3x=-62,5-117,5

(складываем)

15x=-180

x=-180:15

x=-12

Ответ: -12

Answer 3

Let's solve the equation step-by-step:

1. Combine like terms on the left-hand side (LHS) of the equation: 15x - (-117.5) - 10x + 7x = 15x + 117.5 - 10x + 7x = (15x - 10x + 7x) + 117.5 = 12x + 117.5

2. Combine like terms on the right-hand side (RHS) of the equation: -62.5 - 3x = -62.5 - 3x

Now, the equation becomes: 12x + 117.5 = -62.5 - 3x

3. Get all the x terms on one side by adding 3x to both sides of the equation: 12x + 3x + 117.5 = -62.5 - 3x + 3x

Simplifying: 15x + 117.5 = -62.5

4. Now, get rid of the constant term on the left-hand side. Subtract 117.5 from both sides of the equation: 15x + 117.5 - 117.5 = -62.5 - 117.5

Simplifying: 15x = -180

5. Finally, solve for x by dividing both sides of the equation by 15: x = -180 / 15 x = -12

So, the solution to the equation is x = -12.