72 but there is such a thing as a CALCULATOR
U = 4 x 18 U = 72
69
No.
18+18+18+19+23+23+24+24=167
The Answer is Commutative Property
2+14=16
U = 4 x 18 U = 72
How do you add 2x plus 3y equals 18 in 5x-y equals 11
21
69
No.
No.
49+18= 67
18+18+18+19+23+23+24+24=167
The Answer is Commutative Property
18 + 10 + 28 + 10 = 66
60.