Question

$3x + 2(x + 2) = 20 - (2x - 5)$
please solve this and the ans is x=3​

Answer 1

Answer:

Given that 3x+2(x+2)=20-(2x-5)

3x + 2(x) + 2(2) = 20 – 2x -(-5)

3x + 2x + 4 = 20 – 2x + 5

3x + 2x + 2x = 20 – 4 + 5

7x = 21

x = 21/7

x= 3..

Checking:

3x + 2 (x+2)=20-(2x-5)

substitute x = 3

3(3) + 2(3+2) = 20 – (2(3) – 5)

9 + 2(5) = 20 -(6-5)

9 + 10 = 20 -(1)

19 = 19..

So x = 3

Step-by-step explanation:

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Answer 2

Answer:

$given \: \: x = 3 \\ 3x + 2(x + 2) = 20 - (2x - 5) \\ 3x + 2x + 4 = 20 - 2x - 5 \\ 5x + 4 = 15 - 2x \\ 5x + 2x = 15 - 4 \\ 7x = 11 \\ 7 \times 3 - 11 = 0 \\ 21 - 11 = 0 \\ 10$

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