y=-39
273
x+10+3x+14=1804x+24=1804x=180-244x=156x=156\4x=39
The commutative property of addition.
90
61
y=-39
39 + 39 + 39 + 39 + 39 + 39 = 234
15
59
273
x+10+3x+14=1804x+24=1804x=180-244x=156x=156\4x=39
5
2.7 - 20 + 39 = 21.7
The commutative property of addition.
-21.
1 + 3/10 + 9/100 = 1 39/100 (that is, 1 and thirty-nine hundredths).