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3 votes
Help me! Sorry for the other question.... let’s try it again! 1/2 x + 3/5 x = 5/4

User Dbquarrel
by
6.1k points

2 Answers

4 votes

Answer:

x = 1 3/22

Explanation:

1/2 x + 3/5 x = 5/4

We need to get rid of the fractions by multiplying by 20 on each side

20 (1/2 x + 3/5 x) = 20 * 5/4

Distribute

10x + 12x = 25

Combine like terms

22x = 25

Divide each side by 22

22x/22 = 25/22

x = 22/22 + 3/22

x = 1 3/22

User Matthew Turner
by
5.8k points
2 votes

Answer:


x = 1(3)/(22)

Explanation:

=>
(1)/(2) x + (3)/(5) x = (5)/(4)

LCM = 20

So, Multiplying both sides by 20

=>
20 ((x)/(2) + (3x)/(5)) = 5 * 5


10 * x + 4*3x = 25\\10x+12x = 25\\22x = 25

Dividing both sides by 22


x = (25)/(22)


x = 1(3)/(22)

User Victor Stagurov
by
5.7k points