a + b = 60, a - b = 30 find a and b
Answers
Answered by
3
Step-by-step explanation:
a+b=60.........1
a-b=30..........2
add 1 and 2
2a=90
[a=45]
from 1
b=60-45
[b=15]
Answered by
0
Answer:
a + b = 60......(1)
a - b = 30
a = 30 + b
Put the value of a in equation (1)
30 + b + b = 60
30 + 2b = 60
2b = 30
•°• b = 15
a - b = 30
a - 15 = 30
•°• a = 15
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