Q4K) 3x + 3(x + 1) + 3(x + 2) = 99 and check the solution
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Answer:
x = 10
Step-by-step explanation:
3x + 3(x + 1) + 3(x + 2) = 99
=> 3x + 3x + 3 + 3x + 6 = 99
=> 3x + 3x + 3x + 3 + 6 = 99 [ rearrange ]
=> 9x + 9 = 99
=> 9x = 99 - 9
=> 9x = 90
=> x = 90/9
=> x = 10
Check
Replace x by 10
3x + 3(x + 1) + 3(x + 2) = 99
=> 3 (10) + 3 ( 10 + 1 ) + 3 ( 10 + 2 ) = 99
=> 30 + 3 ( 11 ) + 3 ( 12 ) = 99
=> 30 + 33 + 36 = 99
=> 99 = 99
99 = 99 => LHS = RHS
Hence proved x = 10 for the given equation
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