(3) 2x - 3y = 9; 2x + y = 13
II
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Answered by
1
Explanation:
2x-3y = 9------(1)
2x+y = 13------(2)
Subtracting eq (2) from (1)
2x-3y = 9
-2x-y = -13
_________
-4y = -4
_________
y = 1
Putting y in eq (1)
2x-3(1) = 9
2x = 12
x = 6
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Answered by
0
x = 6 & y = 1
- Step-by-step explanation:
2x - 3y = 9 _(i) 2x + y = 13 _(ii)
- SUBTRACT → (ii) - (i)
2x + y - (2x - 3y) = 13 - 9
2x + y - 2x + 3y = 4
4y = 4
y = 1
- Put y = 4 in eqn. (ii)
2x + 1 = 13
2x = 12
x = 6
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