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3 years ago

The sum of two numbers is 8 if one number is subtracted from the other the result is -4

Mathematics

2 answers:

Elena-2011 [213]3 years ago

8 0

Use these formulas:

x + y = 8
x - y = -4

Delvig [45]3 years ago

3 0

A + b = 8
a - b = -4

a = b - 4
(b - 4) + b = 8
2b - 4 = 8
2b = 12
b = 6
a + 6 = 8
a = 2

a = 2
b = 6

2 + 6 = 8
2 - 6 = -4

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