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Question

If 4x+22x1=3x+12+3x12, then x=

A
12
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B
32
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C
52
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D
1
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Solution

The correct option is B 32
We have,
4x+22x1=3x+12+3x12 2×22x1+22x1=3x12×3+3x12
22x1(2+1)=3x12(3+1) 22x1×3=3x12×4
22x3=3x32
(22)x32=3x324x32=3x32x32=0x=32

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