Answer :
So,
Let Consuelo's spendings be c and Brenda's spendings be b.
We have our first equation: c = 2b - 3
And our second equation: c = 81
Substitute 81 for c
81 = 2b - 3
Add 3 to both sides
84 = 2b
Divide both sides by 2
42 = b
Brenda spent $42.
Let Consuelo's spendings be c and Brenda's spendings be b.
We have our first equation: c = 2b - 3
And our second equation: c = 81
Substitute 81 for c
81 = 2b - 3
Add 3 to both sides
84 = 2b
Divide both sides by 2
42 = b
Brenda spent $42.
