4x+7y=26 simultaneous equation?

Question

4x+7y=26 (simultaneous equation)

Answer 1

Simultaneous equations (the term is plural) must have two relationships shown, so that you can find the values of x and y that are *simultaneously* true for both relationships. There is no way to get a unique answer from a single equation in two unknowns.



Suppose the second relationship were x - y = -3



You can rewrite this as y = x+3 (convince yourself)



Then substitute this relationship for y into your first equation



4x + 7 (x + 3) = 26



4x + 7x + 21 = 26



11x = 5



x = 5/11



Now put this numerical value for x into the second equation and solve for y:



y = 5/11 + 3 = 38/11



You have solved for x and y in two simultaneous equations.



I am sure you will find there is a paired equation in your *actual* problem - there must be. This example that I made up is NOT the answer to your problem - you just solve it the equivalent way.



Mark

Answer 2

So where's the OTHER equation?! Simultaneous equations ALWAYS come in pairs; look up the definition of the word SIMULTANEOUS!



This is NOT a simultaneous equation.

Answer 3

Multiply the 2d equation via making use of two: grants 8x+19y=26 now the two equations equivalent 26 and are equivalent, so: 3x+7y = 4x+5y, grants: 7y-5y = 4x-3x , Giving: 2y=x, so replace it in any equation: 3(2y)+7y=26, 6y+7y=26., 13y=26 so y=26/13=2. Now, each and every physique comprehend Y=2, replace it to discover X: 3x+7*2=26, 3x=26-14=12, x=12/3=4 (you are able to choose to alter the extensive form's sign each and every time you progression it from one side of the equation to the a number of). X=4, Y=2 attempt it to be sure if that is appropriate: 3*4+7*2=26, 12+14= 26.

Answer 4

where is other equation?



This system will have infinite number of solutions



One of them is X=3 y=2



for other solutions put X=some number and find Y

Answer 5

wertwyy