Solve the following pair of linear equations: | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Let $x = \frac{1}{a}$ and $y = \frac{1}{b}$. The equations become:$8x - 9y = 1$  ---$(1)$$10x + 6y = 7$ ---$(2)$Multiply equation $(1)$ by $2$ and

Vedclass · Accepted Answer

$(2, 3)$

Vedclass · Answer

(A) Let $x = \frac{1}{a}$ and $y = \frac{1}{b}$. The equations become:$8x - 9y = 1$  ---$(1)$$10x + 6y = 7$ ---$(2)$Multiply equation $(1)$ by $2$ and equation $(2)$ by $3$ to eliminate $y$:$16x - 18y = 2$ ---$(3)$$30x + 18y = 21$ ---$(4)$Adding $(3)$ and $(4)$:$46x = 23 \implies x = \frac{23}{46} = \frac{1}{2}$.Since $x = \frac{1}{a}$,we have $a = 2$.Substitute $x = \frac{1}{2}$ into $(1)$:$8(\frac{1}{2}) - 9y = 1 \implies 4 - 9y = 1 \implies 9y = 3 \implies y = \frac{1}{3}$.Since $y = \frac{1}{b}$,we have $b = 3$.Thus,$(a, b) = (2, 3)$.

Part $I$	Part $II$
$1.$ The solution of $2x - y = 4$ and $3x - 2y = 5$	$a.$ $x = 3, y = 2$
$2.$ The solution of $5x - y = 14$ and $4x - 3y = 9$	$b.$ $x = 3, y = 1$
$3.$ The solution of $4x - 3y = 5$ and $3x - y = 5$	$c.$ $x = 2, y = 1$
$4.$ The solution of $3x - 2y = -1$ and $2x - 5y = -8$	$d.$ $x = 1, y = 2$

Solve the following pair of linear equations: $\frac{8}{a} - \frac{9}{b} = 1$ and $\frac{10}{a} + \frac{6}{b} = 7$.

Similar Questions

Solve the following pair of linear equations by the cross-multiplication method:
$3x + y = 7$
$2x + 3y = 14$

The solution set of a pair of equations $5x - 5y = -5$ and $\frac{3x}{2} - \frac{3y}{2} + \frac{3}{2} = 0$ is.........

The pair of equations $2x + y - 4 = 0$ and $x + 2y - 5 = 0$ has........

Do the following pair of linear equations have no solution? Justify your answer.
$2x + 4y = 3$
$x = 2y$

Vedclass Test Series

Exam Paper Generator

Online Exam Module