Question

45b+23-12b=3b-63. alquem me ajuda

Answer 1

$45b + 23 - 12b = 3b - 63 \\ 45b - 12b - 3b = -63 - 23 \\ 30b = -86\\ b = \frac{-86}{30 } \\ b = \frac{-43}{15}$

S = {-43/15}

Answer 2

45b + 23 - 12b = 3b - 63

45b - 12b - 3b = -23 - 63

30b = -86

b = -86/30

b = -2,86