3
2
If: 3x+2y = 5x+2y = 14 Then: 3x+2y = 14 and 5x+2y =14 Subtract the 1st equation from the 2nd equation: 2x = 0 Therefore by substitution the solutions are: x = 0 and y = 7
10x-2x =8x-527
2x + 5 = 25 2x = 20x = 10
Simultaneous suggests at least two equations.
Another straight line equation is needed such that both simultaneous equations will intersect at one point.
It seems to be some kind of simultaneous equation with too many equality signs in it.
2x = y + 7 x - 2 = y substitute the y from the second equation into the first: 2x = x - 2 + 7 2x = x+5 x = 5 --> y = 5 - 2 y = 3
If 2x - 13 = 5 then 2x = 5 + 13 (we have in effect added 13 to both sides of the equation in this step) 2x = 18 x = 9.
It's a simultaneous equation and can be solved by elimination which works out as:- x = -4 and y = 1
It is a simultaneous equation and when solved its solutions are x = 71/26 and y = 50/13
Simultaneous equations -2x + y = -3 -x + 2y = 3 Multiply the bottom equation by '-2' Hence -2x + y = -3 2x - 4y = -6 Add the two equations -3y = -9 Divide both sides by '-3' y = (+)3 Substitute in to either equ'n for 'x' -2x + 3 = -3 Subtract '3' from both sides -2x = -6 Divide both sides by '-2' x = (+)3 Hence (x,y) = ( 3,3)
Simultaneous Equations are very helpful because it can help u solve problems in real life. There are 2 ways to approach a simultaneous equation, Substitution and elimination method. As a good practice it is always good to practice your substitution method first. I wont go too advance for now but consider this question;Find two numbers whose sum is 21 and difference is 9.This question requires 2 equation to solve; thus it is call simultaneous equation.Solve: Let x be a number, and Let y be another number.x + y = 21 equation 1x - y = 9 equation 2Rearrange equation 2 to make equation 3(Equation 3 is just to sub into the other eqs)x = 9 + y equation 3Sub equation 3 into 1(9 + y) + y = 219 + 2y = 212y = 12y = 6 First solution!Sub y = 6 into equation 2x - 6 = 9x = 15 Second Solution!Therefore, the numbers are 15 and 6.In a simultaneous equation (with 2 variable) there will always be 2 answers.This is copied from my other worked examples. I do not really understand your question. If you have a simultaneous equation that you can't solve. Post it up and i will help.* * * * *Good answer, but spoiled by the last-but-one paragraph. Simultaneous linear equations with two variables can have no solutions (if the corresponding graphs are distinct parallel lines) or infinitely many solutions (if they are, in effect, the same line). And then, there are always simultaneous non-linear equations. Two quadratics, for example, can have 0, 1, 2 or infinitely many solutions.
what is the algebraic equation for 2x + 3 =8
Without any equality signs the given terms can't be considered to be equations
3x2-2x-2 = (3x-3.645751311)(x+0.5485837704) when factored with the help of the quadratic equation formula