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andrey2020 [161]
3 years ago
14

Answer the question below please

Mathematics
2 answers:
PSYCHO15rus [73]3 years ago
5 0

Answer:

x=7

Step-by-step explanation:

AC=3x+3  AB=-1+2x and BC=11

AC = AB + BC

ALL THE STEPS:

3 X + 3 = - 1 + 2 X + 11

3 X + 3 = 2 X + 10

3 X + ( - 2 X ) + 3 = 2 X + ( - 2 X ) + 10

X + 3 = 10

X + 3 + ( - 3 ) = 10 + ( - 3 )

X = 7

iren [92.7K]3 years ago
4 0
X=7 is The right answer
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