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OpenStudy (anonymous):
a+b=10 a-b=2 Solve the system of equations
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OpenStudy (anonymous):
add them together
OpenStudy (texaschic101):
a + b = 2 a - b = 2 -----------add 2a = 4 a = 4/2 a = 2 now sub 2 in for a in either of the above equations a + b = 2 2 + b = 2 b = 2 - 2 b = 0 check... a - b = 2 2 - 0 = 2 2 = 2 (correct) check... a + b = 2 2 + 0 = 2 2 = 2 (correct) ANSWER : a = 2 and b = 0
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