Check n=1 is a solution of the equation n+7=20 or not
3. Solve : [34 + 2 x 18+ (-10)] ÷ 15
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Step-by-step explanation:
n=1
n+7=20
1+7=20
8 not equal to 20
so it's not right.
[34+2*18+(-10)]÷15
=(34+36-10)÷15
=60÷15
=4
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