Answer:
x+y=7.2
x-y=2.7
Explanation:
equation
x+2.7+x=7
2x=4.3
x=4.3/2
y=7-4.3/2
2.25 and 4.95
x + y = 7.2
x - y = 2.7
x = 7.2 - y
(7.2 - y) - y = 2.7
7.2 - 2y = 2.7
-2y = 2.7 - 7.2
-2y = -4.5
-2y/-2 = -4.5/-2
y = 2.25
x + 2.25 = 7.2
x = 7.2 - 2.25
x = 4.95
Check: 4.95 and 2.25
(4.95) + (2.25) = 7.2
7.2 = 7.2
(4.95) - (2.25) = 2.7
2.7 = 2.7
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