Question

Solve the following Simultaneous equations
3
$3x + 2y = 29 \: 5x - y = 18$
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Answer 1

Answer:

solve for y at last simply by solving equations

Answer 2

EXPLANATION.

⇒ 3x + 2y = 29. - - - - - (1).

⇒ 5x - y = 18. - - - - - (2).

As we know that,

Multiply equation (1) by 1.

Multiply equation (2) by 2.

⇒ 3x + 2y = 29. - - - - - (1) x 1.

⇒ 5x - y = 18. - - - - - (2) x 2.

We get,

⇒ 3x + 2y = 29. - - - - - (1).

⇒ 10x - 2y = 36. - - - - - (2).

Adding both the equation (1) and (2), we get.

⇒ 13x = 65.

⇒ x = 5.

Put the value of x = 5 in equation (2), we get.

⇒ 5x - y = 18.

⇒ 5(5) - y = 18.

⇒ 25 - y = 18.

⇒ - y = 18 - 25.

⇒ - y = - 7.

⇒ y = 7.

Values of x = 5 and y = 7.