Question

3x+2(x+2)=20-(2x-5) solve and check

Answer 1

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..


Check:-

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

Answer 2

Hey there!


Solution:

$3x + 2 ( x + 2 ) = 20 - ( 2x - 5 ) \\ \\ 3x + 2x + 4 = 20 - 2x + 5 \\ \\ 5x + 4 = 20x - 2x + 5\\ \\ 5x + 2x = 20 - 4 + 5 \\ \\ 7x = 16 + 5 \\ \\ 7x = 21 \\ \\ x = \frac{21}{7} \\ \\ x = 3 \\ \\ \textbf{To Check this} : \\ \\ Put x = 2 \\ \\ 3 ( 3 ) + 2 ( 3 + 2 ) = 20 - {2 ( 3 ) - 5 } \\ \\ 9 + 2 (5) = 20 - ( 6 - 5)\\ \\ 9 + 10 = 20 - 1 \\ \\19 = 19$


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