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Mathematics
31 May, 02:39
3a + 2b = 13
3a + 6b = 33
A=?
B=?
+3
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1
)
Kallie Lowe
31 May, 02:43
0
3a + 2b = 13 ⇒ - 1 (3a + 2b = 13) ⇒ - 3a - 2b = - 13
3a + 6b = 33 ⇒ 1 (3a + 6b = 33) ⇒ 3a + 6b = 33
4b = 20
b = 5
3a + 2b = 13
3a + 2 (5) = 13
3a + 10 = 13
3a = 3
a = 1
Answer: a = 1, b = 5
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