substitutikn method .... p,ease solve this for me
a-2b=1 , 3a+b=17
Answers
Answered by
1
a=5 , b=2
Step-by-step explanation:
a-2b=1
a=1+2b →1 eq
3a+b=17
3(1+2b)+b=17. (putting a=1+2b)
3+6b+b = 17
7b=17-3
b=14/7
b=2
from a-2b=1
a-2(2)=1
a=1+4
a=5
Answered by
2
answer:
a = 5 and b = 2
Step-by-step explanation:
a - 2b = 1
=> a = 1 + 2b ......eq 1
3a+b = 17
=> 3 (1 + 2b) + b = 17 .......from eq 1
=> 3 + 6b + b = 17
=> 3 + 7b = 17
=> 7b = 17 - 3
=> 7b = 14
=> b = 14 / 7
=> b = 2 ans.
a = 1 + 2b ...........from eq 1
=> a = 1 + 2(2)
=> a = 1 + 4
=> a = 5 ans.
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