3. When the sum of 2a and 15 is divided by 7, the result is 11. Find the value of a.
Answers
Answered by
6
Answer:
a=31
Step-by-step explanation:
Sum = 2a + 15
when this sum is divided by 7 the result is 11:-
2a + 15/7 = 11
2a+ 15 =77
2a= 77-15
2a=62
a = 31
hope this would help
Answered by
2
(2a+15)÷7=11
2a+15=11×7 {multiplying by 7 on bith
sides}
2a+15=77
2a=77-15{subtracting 15 from both
sides}
2a=62
Therefore, a=31....{dividing by 2 on
both sides}
Therefore a=31
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