Question

LHs and rhs of a. x+ ( x+6) = ( x + 8 ) + 21 ​

Answer 1

hi!

x + [x+6] = [x+8] + 21

x + x + 6 = x + 8 + 21

2x + 6 = x + 29

2x - x = 29 - 6

x = 23

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