Question

$x+2x+2x+10=100$
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Answer 1

Answer:

x+2x+2x+10=100

or, 5x =100-10

or, x=90/5

or, x=18

Answer 2

Answer:

x+2x+2x+10=100

5x+10=100

5x=100-10

5x=90

x=90÷5

x=18