A+A=120
B+A=70
A+B+C=90
HOW??
Answers
Answered by
0
Answer:
A+A=120
MEANS 2A=120
THEREFORE A=60
SAME FOR
B+A=70
B=70-A
B=10
A+B+C=90
60+10+C=90
70+C=90
C=90-70
C=20
THIS IS HOW
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Answered by
1
Answer:
A = 60
B = 10
C = 20
Step-by-step explanation:
2A = 120
2A = 120A = 120/2
2A = 120A = 120/2A = 60
B + A = 70
B + A = 70B + 60 = 70
B + A = 70B + 60 = 70B = 70 - 60
B + A = 70B + 60 = 70B = 70 - 60B = 10
A + B + C = 90
60 + 10 + C = 90
C = 90 - 70
C = 20
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