Download App

Linear Equations in Two Variables — Maths STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9MathsLinear Equations in Two Variables2 Marks
Question
Solve the following simultaneous equations $:x – 2y = -1 ; 2x – y = 7$
✓

Answer

$ x-2 y=-1$
$2 x-y=7$
Multiply (I) with $2$
$2 x-4 y=-2$
Subtracting (III) from (II)
$ -3 y=-9$
$\Rightarrow y=3$
Putting the value of $y$ in $(\mathrm{I})$ we get
$x-2 \times 3=-1$
$\Rightarrow x-6=-1$
$\Rightarrow x=5$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Mark Question" from Linear Equations in Two Variables→Linear Equations in Two Variables — all question types→Maths STD 9 question papers→Maharashtra Board STD 9 question papers→Maharashtra Board question paper generator→

Similar questions

In ∆PQR, ∠P = 70°, ∠Q = 65°, then find ∠R.
→
Convert into Decimal form the rational numbers And Write is either terminating or non-terminating recurring type :$-\frac{7}{64}$
→
Simplify the following:$\frac{5\times25^{\text{n}+1}-25\times5^{2\text{n}}}{5\times5^{2\text{n}+3}-(25)^{\text{n}+1}}$
→
Find the following products:
$\left(7 p^4+q\right)\left(49 p^8-7 p^4 q+q^2\right)$
→
Three angles of a quadrilateral are 75°, 90° and 75°. Find the measure of the fourth angle.
→
Factorise:
$x^5 + x^2$
→
Two adjacent angles on a straight line are in the ratio 5 : 4. Find the measure of each of these angles.
→
If $\text{x}=\frac{1}{2}$ is a zero of the polynomial $f(x) = 8x^3 + ax^2 - 4x + 2$, find the value of a.
→
Express the following equation in the form ax + by + c = 0 and indicate the values of a, b, c in case.
3x - y = x - 1
→
If $x + 1$ is a factor of $x^3 + a$, then write the value of a.
→