Best Answer

Equations: 7x+4y = 9 and 2x+3y = 1

Multiply all terms in the 1st equation by 2 and all terms in the 2nd equation by 7

So: 14x+8y = 18 and 14x+21y = 7

Subtract the 1st equation from the 2nd equation: 13y = -11 => y = -11/13

By substituting y = -11/13 into any of the equations x = 23/13

Therefore the solutions are: x = 23/13 and y = -11/13

Study guides

☆☆

Q: What are the solutions to the simultaneous equations of 7x plus 4y equals 9 and 2x plus 3y equals 1 in step by step stages?

Write your answer...

Submit

Still have questions?

Related questions

1 If: 2x+5y = 16 and -5x-2y = 2 2 Then: 2*(2x+5y =16) and 5*(-5x-2y = 2) is equvalent to the above equations 3 Thus: 4x+10y = 32 and -25x-10y = 10 4 Adding both equations: -21x = 42 or x = -2 5 Solutions by substitution: x = -2 and y = 4

Eqn (A): => 2x + 5y = 16 Eqn (B): => 5x + 2y = -2 5*Eqn (A) - 2*Eqn (B): 21y = 84 => y = 4 Substituting for y in Eqn (a): x = -2

Waterfall is one of the software development life cycle model. Waterfall model has five stages.

identifying a problem thinking of possible solutions deciding on the best solution communicating implement evaluate (:

If: y = 3x+4 and y = 2-7x Then: 3x+4 = 2-7x So: 3x+7x = 2-4 => 10x = -2 => x = -1/5 By substitution: y = 17/5 Solution: x = -1/5 and y = 17/5

Points: (7, 5) Equation: 3x+4y-16 = 0 Perpendicular equation: 4x-3y-13 = 0 Equations intersect at: (4, 1) Length of perpendicular line: 5

4 stages three stages

what are the four stages of earths evolution

There are no stages in mediation.

Equation: 3x+4y-16 = 0 Perpendicular equation: 4x-3y-13 = 0 Both equations intersect at: (4, 1) Perpendicular distance: square root of (7-4)2+(5-1)2 = 5

It has 3 stages. The stages are : Egg, Nymph and the Adult.

there are 4 stages of cancer. i don't know what they are but there are four stages.

People also asked