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Mathematics
Tamara Grimes
4 March, 08:09
If a+b=-2 And x+y = - 2 what is 4x+5a+4y+5b?
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Malcolm Boyle
4 March, 10:03
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a + b = - 2
x + y = - 2
4x + 5a + 4y + 5b = 4x + 4y + 5a + 5b = 4 (x + y) + 5 (a + b)
substitute
4 (-2) + 5 (-2) = - 8 - 10 = - 18
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