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2x-3y equals -2 4x plus y equals 24 use substitution method and work the system of equation?
how do you use the substitution method for this problem 2x-3y=-2 4x+y=24
What is the meaning substitution in maths?
now think that:-x=10y=5when you are asked to slove an equation say.....2x+4y=?.then we change the value of x and y into digits so we can work the problem out.now since x=10.then 2x is= 10*2which is 20.y=5then 4y is=5*4which is 20now we have the value of 2X and 4Yso lets use it to get the answer2x+4y=?2x=202y=20so now since we know the values of 2x 4y lets us write their values in the equation insteadso now it is 20+20=?the answer is 40the changing of the algebric structure 2x into 20 in the equation is called substitution
Substitution method 2x plus 3y equals 13 x equals 2?
2x-3y=13
- 2x plus 5 when x equals -3?
-2x+5 x=-3 --original equation-2(-3)+5 --use substitution property6+5 --solve.11 --final answer is 11.
How so you slove y equals 6x and 2x plus 3y equals -20 by using the system of substitution?
To solve a system of equations using substitution you solve one of the equations for one of the variables then substitute that into the other equation to solve for the other variable. For example. y = 6x 2x + 3y = -20 The first equation has already been solved for y. So, you simply substitute that into the second equation. 2x + 3(6x) = -20 2x + 18x = -20 20x = -20 x = -20/20 = -1 Now you have solved for x. You can substitute your answer for x back into the first equation to solve for y. y = 6x = 6(-1) = -6 Putting it all together... x = -1 y = -6
