-7
7b + 15 = (-34)
7b = (-34) - 15
7b =(-49)
b = (-49) / 7
b= (-7)
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7b + 15= -34 First, 7b + 15 - 15 = -34 - 15 So, 7b = -49 Then, 7b/7 = -49/7 And finally, b = -7 So b = -7
8+7 = 15
15 -7 = 8
false. because 5plus 3 plus 7 equals, 15, and 15 plus three is not seven
75 / 15 + 4 + 7 = 16