CBSE Class 10 Answered
by the method of elimination, solve 3x+4y =10 and 2x -2y =2
Asked by Pearlkaurvirk | 09 Mar, 2016, 05:18: PM
Expert Answer
Solving 3x + 4y =10 and 2x - 2y =2 by elimination method:
Let 3x + 4y =10 ...(1) and
2x - 2y =2 ...(2)
Then we get the equation: 4x – 4y = 4 ... (3)
Add Equation (1) and (2) to eliminate y, because the coefficients of y are the same.
So, we get
(3x + 4x) + (4y – 4y) = 10 + 4
7x = 14
x = 2
Substituting this value of x in (1), we get
3x + 4y =10
3(2) + 4y =10
4y = 4
y = 1
Answered by Priti Shah | 09 Mar, 2016, 05:40: PM
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