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3b -2 =7 b+4
If ( b ) equals 4, then ( 3b ) can be calculated by substituting 4 for ( b ). Thus, ( 3b = 3 \times 4 = 12 ). Therefore, ( 3b ) is equal to 12.
-7+3b = 4b-8 3b-4b = -8+7 -b = -1 b = 1
If: 7+3b = 61 Then: b = 18
3b+4 = b+12 3b-b = 12-4 2b = 8 b = 4