2 Answers

Raja G · Answer 1 · 2019-04-07T10:03:56+0000

Answer:

$\boxed{\boxed{\sf x=4}}$

Explanation:

$\star \:\:\sf 5(x-10)=30-15x \: \:\star$

Expand:

$\Longrightarrow \sf 5x-50=30-15x$

Add 50 to both sides:

$\Longrightarrow \sf 5x-50+50=30-15x+50$

$\Longrightarrow \sf 5x=-15x+80$

Add 15x to both sides:

$\Longrightarrow \sf 5x+15x=-15x+80+15x$

$\Longrightarrow \sf 20x=80$

Divide both sides by 20:

$\Longrightarrow \sf \cfrac{20x}{20}=\cfrac{80}{20}$

$\Longrightarrow \sf x=4$

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