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2 years ago

What is 2.50x + 4x = 39

Mathematics

2 answers:

Artemon [7]2 years ago

4 0

$2.5x+4x=39\\6.5x=39\\x=39/6.5\\x=6$

Norma-Jean [14]2 years ago

3 0

$2.50=2.5\\\\2.5x+4x=39\\\\6.5x=39\qquad\text{divide both sides by 6.5}\\\\x=\dfrac{39}{6.5}\\\\x=\dfrac{390}{65}\\\\\boxed{x=6}$

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