ToonaRoll
ToonaRoll
18-09-2017
Mathematics
contestada
9 + b = -12
q+ (-9) = 12
Respuesta :
DeathTheKid101
DeathTheKid101
18-09-2017
Subtract 9 from both sides
b = -12 - 9
simplify -12 - 9
Answer: b = -21
9 + -21 = -12 is true.
simplify brackets
simplify q + -9 to q - 9
add 9 to both sides
simplify 12 + 9 to 21
q = 21
21 + -9 = 12 is true
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