if a+b=6 and 3a-b =4 then find the value of a-b
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Answered by
2
given,
a+b=6...........(1)
3a-b=4.......... (2)
(1)+(2)=> a+b+3a-b=6+4
=>4a=10
=>a=10/4=5/2
substitute a=5/2 in (1)
=>a+b=6
=>5/2+b=6
=>b=6- 5/2
=>b=12-5/2
=>b=7/2
a-b=5/2-7/2=5-7/2=-2/2=-1
HOPE U CAN UNDERSTAND
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a+b=6...........(1)
3a-b=4.......... (2)
(1)+(2)=> a+b+3a-b=6+4
=>4a=10
=>a=10/4=5/2
substitute a=5/2 in (1)
=>a+b=6
=>5/2+b=6
=>b=6- 5/2
=>b=12-5/2
=>b=7/2
a-b=5/2-7/2=5-7/2=-2/2=-1
HOPE U CAN UNDERSTAND
PLS MARK IT AS BRAINLIEST
Answered by
3
a + b = 6. 1.
3a - b = 4. 2.
add 1 n 2
4a = 10
a = 10/4
a = 5/2. 3.
put the value of 3 equation in 1.
5/2 + b = 6
b = 6 - 5/2
b = 7/2
a - b = 5/2 - 7/2
= -2/2
a - b = -1
3a - b = 4. 2.
add 1 n 2
4a = 10
a = 10/4
a = 5/2. 3.
put the value of 3 equation in 1.
5/2 + b = 6
b = 6 - 5/2
b = 7/2
a - b = 5/2 - 7/2
= -2/2
a - b = -1
Anonymous:
hope you have understood sir
if you like my answer please mark me as brainliest
Nice work, small correction is when u write eq 1 use ------(1)
Otherwise users can get confused
ok :-)
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