To start, you must first isolate the 5n term so that you can solve for the variable of n.
To do this, subtract 7 from both sides: 5n+7=21 -7 -7 5n=14
Now, divide both sides by 5 to isolate the n term: 5n/5=14/5
You should get a result of n=14/5
Therefore, your final answer should be n=14/5.
To check if the answer is correct, simply plug 14/5 for the variable n in the original equation. If you get a correct mathematical statement when you simplify, the value is correct: n=14/5 5(14/5)+7=21 14+7=21 21=21
since its 10%percent annualy(compound interest),at the end of 1year it would be 1000+(1/10 *1000)that is 1100,then for the second year it would be 1100+(1/10 * 1100)that is 1210.please mark me as brainliest
