Question

$\frac{2x}{5} = 4$
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Answer 1

2x=4X5
2x=20
x=20/2
x=10
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Answer 2

$\sf{Given\::-}$

$\dashrightarrow\sf{\frac{2x}{5} = 4}$

$\sf{Solution\::-}$

$\dashrightarrow\sf{\frac{2x}{5} = 4}$

$\dashrightarrow\sf{2x = 4 × 5}$

$\dashrightarrow\sf{x = \frac{4 × 5}{2}}$

$\dashrightarrow\sf{x = 10}$

Let's check it ,

x = 10

$\\\\\dashrightarrow\sf{\frac{2 × 10}{5} = 4}$

$\dashrightarrow\sf{\frac{20}{5} = 4}$

$\dashrightarrow\sf{\frac{\cancel20}{\cancel5} = 4}$

$\rm\red{LHS \:= \:RHS\:,}$ $\rm\red{Hence\:Verified}$