Solve the proportion

Mathematics

2 answers:

Svetradugi [14.3K]2 years ago

5 0

Answer:

$y=5.6$ or $y=28/5$

Step-by-step explanation:

4/5 = y/7

⇒ Cross multiply:

4 × 7 = 5 × y

⇒ Multiply 4 × 7 & 5 × y:

$28=5y$

⇒ Solve the formed equation:

$28=5y$

⇒ Move all the terms containing y to the right side and the other values to the left side:

⇒ Add '-5y' to each side of the equation:

$28+-5y=5y+-5y$

⇒ Combine like terms: $5y+-5y=0$

$28+-5y=0$

⇒ Add '-28' to each side of the equation:

$28+-28+-5y=0+-28$

⇒ Combine like terms: $28+-28=0$

$0+-5y=0+-28$

$-5y=0+-28$

⇒ Combine like terms: $0+-28=-28$

$-5y=-28$

⇒ Divide each side by '-5':

$y=5.6$ or $y=28/5$

hope this helps :)

sergeinik [125]2 years ago

4 0

$y = \frac{28}{5}$

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