(2^3x-1+10)÷21=18 class 8 algebra
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(8x-1+10)\21=18
8x+9\21=18*2
8x+9=378
8x=378-9
8x=369
x=46.125
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Answered by
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2^3x-1= 378
2^3x-1 = 368
8^x-1=368
x=369/8
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