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(y + 1) + (y + 2) + (y + 3) + ... + (y + 100) = 5150
=> (y + y + y + ... + y) + (1 + 2 + 3 + ... + 100) = 5150
=> 100y + 5050 = 5150
=> 100y = 100
=> y = 1
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y x 1/2 + y x 3/2 =100
y x (1/2 +3/2) =100
y x 4/2 = 100
y = 100: 4/2 =200
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y+32+y+12+y+22=99
<=>(y+y+y)+(32+12+22)=99
<=>3*y+66=99
=>3*y=99-66
=>3*y=33
=>y=33:3
=>y=11
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A \(\frac{2}{3}+y=\frac{11}{12}.5\)
\(\Rightarrow\frac{2}{3}+y=\frac{55}{12}\)
\(\Rightarrow y=\frac{55}{12}-\frac{2}{3}\)
\(\Rightarrow y=\frac{55}{12}-\frac{8}{12}\)
\(\Rightarrow y=\frac{47}{12}\)
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a) \(24\times y+76\times y=100\)
\(\Rightarrow\left(24+76\right)\times y=100\)
\(\Rightarrow100\times y=100\)
\(\Rightarrow y=100:100\)
\(\Rightarrow y=1\)
b) \(125\times y-100\times y=1000\)
\(\Rightarrow\left(125-100\right)\times y=1000\)
\(\Rightarrow25\times y=1000\)
\(\Rightarrow y=1000:25\)
\(\Rightarrow y=40\)