henaoalexandra
0.26(x+40)+0.37(x+20)=20



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tkhunny
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Were you planning to solve that? Let's see it!

henaoalexandra
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@tkhunny i dont know how to. i got the wrong answer i just want to see the steps. can you help me?

tkhunny
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Doesn't work that way. Prove that you can do SOEMTHING.
0.26(x+40)+0.37(x+20)=20
Do one piece at a time.
0.26(x+40)
Can you expand that?

henaoalexandra
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.26x+10.4

henaoalexandra
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@tkhunny

tkhunny
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Perfect. Now the next piece.
0.37(x+20)

henaoalexandra
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@tkhunny .37x + 7.4

tkhunny
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There you have it. Which part of that could you not do previously? Now add them all up!
0.26x + 10.4 + 0.37x + 7.4

henaoalexandra
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@tkhunny
3+0.11x=20
3 3
0.11x=23
divide 0.11x
x=209

tkhunny
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0.26x + 0.37x = 0.63x
10.4 + 7.4 = 17.8
Why are you feeling a need to subtract? Did you write the problem statement incorrectly?

henaoalexandra
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@tkhunny ohhhhh okay thank you i get it. can you help me get through other ones please?

henaoalexandra
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2/5x1/3x=2 @tkhunny

tkhunny
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You'll have to be more clear. is "2/5x" this \(\dfrac{2}{5x}\) or this\(\dfrac{2}{5}x\)? Use parentheses to be clear.

henaoalexandra
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\[\frac{ 2 }{ 5 }x\]

henaoalexandra
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@tkhunny

tkhunny
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Now we add fractions? Denominators are 5 and 3. Go!