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umka2103 [35]
3 years ago
12

3 ( 4 y - 5 ) = 69

Mathematics
2 answers:
dedylja [7]3 years ago
8 0
First distribute the 3

12y - 15 = 69

Subtract -15 from both sides 

12y = 84

<u>y=7</u>

PROOF:

3 (4 *7 - 5) 

3 (28-5)

3 (23) = 69


slava [35]3 years ago
6 0
Y<span>= 7 because if you divide both sides by three you get 3(4y -5) </span><span> ÷ 3 and 69</span><span> ÷ 3 and you simplify it you get 4y - 5 </span><span>= 23 then add 5 to both sides 4y - 5 + 5 = 23</span> <span>+ 5  simplify that you get 4y </span><span>= 28 divide again but divide both sides by 4
4y </span><span>÷ 4    28 </span><span>÷ 4 simplify one more time and y </span><span><span>= 7!</span> </span>













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