Question

solve simultaneous equations 5x+2y=-3x+5y=4​

Answer 1

Answer:

$5x + 2y = 3x + 5y = 4$

the answer is +5

hope u liked it

plz mark me brainliest

Answer 2

Answer:

The solution of the given equations is ( x, y ) = ( - 1, 1 ).

Step-by-step-explanation:

The given simultaneous equations are

5x + 2y = - 3 and x + 5y = 4.

5x + 2y = - 3 - - ( 1 )

x + 5y = 4 - - ( 2 )

Multiplying equation ( 2 ) by 5, we get,

5 * ( x + 5y ) = 4 * 5

⇒ 5x + 25y = 20 - - ( 3 )

Subtracting equation ( 1 ) from equation ( 3 ), we get,

5x + 25y - ( 5x + 2y ) = 20 - ( - 3 )

⇒ 5x + 25y - 5x - 2y = 20 + 3

⇒ 5x - 5x + 25y - 2y = 23

⇒ 0 + 23y = 23

⇒ 23y = 23

⇒ y = 23 ÷ 23

⇒ y = 1

By substituting y = 1 in equation ( 2 ), we get,

x + 5y = 4 - - ( 2 )

⇒ x + 5 * 1 = 4

⇒ x + 5 = 4

⇒ x = 4 - 5

⇒ x = - 1

∴ The solution of the given equations is ( x, y ) = ( - 1, 1 ).

─────────────────────

Additional Information:

1. Linear Equations in two variables:

The equation with the highest index ( degree ) 1 is called as linear equation. If the equation has two different variables, it is called as 'linear equation in two variables'.

The general formula of linear equation in two variables is ax + by + c = 0.

Where, a, b, c are real numbers and a ≠ 0, b ≠ 0.

2. Solution of a Linear Equation:

The value of the given variable in the given linear equation is called the solution of the linear equation.