Step-by-step explanation:
4x-7=-2x+12
Add 2x
6x-7=12
Add 7
6x=19
Divide 6
x = 19/6
19/6 = 3 1/6
x = 3 1/6
Credit Card: (1842.66 - 250) (.145/12) = $19.24 interest accumulated on credit card balance
Savings: 250(0.04/12) = $0.83 interest earned
Difference = 19.24 - 0.83 = $18.41 net interest owed
It is just asking for you to convert 3/4 in 84ths. This means it wants the denominator to be 84. So multiply both the top and bottom by what gets you 84. In this case, multiply both by 21. So 3/4•(21/21)=63/84
