Algebra Help Purple
how: the solution of multi-step equations?
I need help to resolve this problam 2x 5 x 4 = 25 3 or 9-2y = 14 = 26 or 3 B Im-2-7b in pre-algebra and help if anyone knew of textbooks online algebra a Holt book before 2008 purple. i dont have a key code. please help, thanks!
One step at a time. We will begin with 2 5 x 4 = 25 1) Combining terms similar -> 2x +5 x = (2 +5) x = 7x = 7x +4 25 2) Perform both sidesof the equal sign. 7x + 4 = 25 (-4) (-4) = 7x March 21) Divide both sides by 7 (7x) / 7 = 21 / 7 x = 3 4) Check your answer against the original problem. Plug in 3 for x = 2 x 5 x 4 = 25 (2 * 3) + (5 * 3) +4 +15 +4 = June 25 = 25 Correct! Now repeat this process for each problem. Now let 3 to make 9-2y = 14 1) Combine like terms -> 3y-2y = (3-2) y = y 9 + y = 14 2) perform operations on both sides of the equal sign y = 9 + 14 (-9) (-9) Y = 5 3) Check response. Plug y = 5 in the original problem. 9 3 and-2y = 14 9 + (3 * 5) – (2 * 5) = 14 9 +15-10 = 14 Correct! OK Now we do 26 = 3 B 2-7b, combine like terms -> 3b-7b = (3-7) b =- 26 = 2 4b-4b (-2) (-2) subtract 2 from both sides 24 =- 4 b =- 24/-4 divide both sides 4b/-4 by -4 b =- 6
Elimination Method Pt1: Linear Algebra: Systems of Equations
