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Anon25 [30]
3 years ago
12

7+25(5y−10)=45(y+5)+15y heeeelllppppp :(

Mathematics
2 answers:
Lubov Fominskaja [6]3 years ago
8 0

Answer:

Improper fraction form: y = 36/5

Decimal form: y = 7.2

Mixed number form: y = 7 1/5

Step-by-step explanation:

First distribute 25 among everything inside the 1st parentheses to get 125y - 250 in its place.

Now you have 7 + 125y - 250 = 45 (y+5) + 15y

Next distribute the 45 among everything in the 2nd parentheses to get 45y + 225 + 15y in its place.

Now, altogether you have 7 + 125y - 250 = 45y + 225 + 15y

Now we combine the like terms:

7 + (-250) = 7 - 250 = -243

45y + 15y = 60y

-243 + 125y = 60y + 225

Now we isolate for y:

Add 243 to 225, to get 468, and then subtract 60y from 125y to get 65y.

Now we have 65y = 468, so finally we divide 65 on both sides to get y = 468/65, and we can simplify this fraction to 36/5.

<em>As</em><em> </em><em>a</em><em> </em><em>decimal</em><em>:</em><em> </em><em>7</em><em>.</em><em>2</em>

<em>As</em><em> </em><em>a</em><em> </em><em>mixed</em><em> </em><em>number</em><em>:</em><em> </em><em>7</em><em> </em><em>1</em><em>/</em><em>5</em>

Hope this helps you :)

shusha [124]3 years ago
4 0

Answer:

y=7.2 should be the answer

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