Question

2x+5=2(x+1)+11 15(v+2)-30=15v

Answer 1

К первому уравнению:
2х+5=2х+2+11
5=2+11
5=13 (ложное утверждение)

Второе уравнение:
15(v+2)-30=15v
15v+30-30=15v
0=0 (верное утверждение)

Удачи!

Answer 2

Let's solve the given equations step by step:

1. 2x + 5 = 2(x + 1) + 11

Let's simplify the equation by expanding the brackets:

2x + 5 = 2x + 2 + 11

Combine like terms:

2x + 5 = 2x + 13

Next, we can eliminate the common term "2x" from both sides by subtracting it:

2x - 2x + 5 = 2x - 2x + 13

0x + 5 = 0 + 13

Simplify:

5 = 13

Since the equation is not true (5 is not equal to 13), there is no solution to this equation. It means that the original equation is inconsistent or contradictory.

2. 15(v + 2) - 30 = 15v

Let's simplify the equation:

15v + 30 - 30 = 15v

Combine like terms:

15v = 15v

The equation is true for all values of "v". This means that the equation is an identity, indicating that any value of "v" would satisfy it.

Therefore, the solution to the second equation is that "v" can be any real number.