if , 5a-2b=25; 3a -2b=15 find a and b
Answers
Answered by
0
Answer:
a=5, b=0
Step-by-step explanation:
5a-2b=25--eq1
3a-2b=15--eq2
Add eq1 and eq2, we get
2a=10
a=10/2
a=5
Substitute a=5 in eq2
3a-2b=15
3(5)-2b=15
15-2b=15
(-2b)=15-15
(-2b)=0
b=0/(-2)
b=0
Answered by
0
Answer:
a = 5 and b = 25
Step-by-step explanation:
5a - 2b = 25...........(1)
3a - 2b = 15...........(2)
Adding (1) and (2),
5a - 2b = 25
+ 3a - 2b = 15
+
-----------------------
8a + 0 = 40
8a = 40
a =40
-----
8
a = 5
Substituting a = 5 in (1),
5a - 2b = 25
5(5) - 2b = 25
25 - 2b = 25
2b = 25 + 25
2b = 50
b = 50
-----
2
b = 25
Therefore, a = 5 and b = 25
hope it helps
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