Question

help me ! solve for x :

$\curvearrowright \: \sf \: x + 2x + x = 2x + 4$
​

Answer 1

Answer:

$x + 2x + x = 2x + 4 \\ 4x = 2x + 4 \\ 4x - 2x = 4 \\ 2x = 4 \\ \\ x = \frac{4}{2} \\ \\ x = 2$

Answer 2

Answer:

x = 2

Explanation:

$\rightarrow \sf x + 2x + x = 2x + 4$

add similar terms

$\rightarrow \sf 4x = 2x + 4$

subtract both sides by 2x

$\rightarrow \sf 4x -2x= 2x + 4-2x$

subtract similar terms

$\rightarrow \sf 2x= 4$

divide both sides by 2

$\rightarrow \sf x= 2$

Check :

x + 2x + x = 2x + 4

insert x = 2

2 + 2(2) + 2 = 2(2) + 4

multiply

8 = 8

Hence proved that x = 2