ICSE /Class 9
Maths MCQ Based On Simultaneous linear equations in two variables
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ICSE Class 9 Maths Simultaneous linear equations in two variables
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Either add or subtract equations to get an equation in one variable.
Let the no. of books with them be x & y, Form equations solve and get x + y.
Add 2nd and 3rd equation; find x + y and put in 1st equation to find k.
Suppose the extreme digits as x & y; then middle digit will be (x+y)/2. Form equations as per conditions and solve. Here the number is fixed.
One line represents one equation.
Either add or subtract the equations to get an equation in one variable.
Solve 1st and 2nd equation to find x & y; put them 3rd equation to find k.
Suppose the speeds as x & y; Form equations and solve.
For the expression to be linear equation in one variables the degrees on variables i.e. u,v,w can be 1 only with one of them zero; also coefficients can be any real numbers with no condition for x,y,z being variables.
Suppose the digits as x & y; Form equations as per conditions and solve. Here number can be either of two.
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