Answered

IDNStudy.com, ang komunidad ng pagbabahagi ng kaalaman at mga sagot. Alamin ang mga maaasahang sagot sa iyong mga tanong mula sa aming malawak na kaalaman sa mga eksperto.

how to do substitution

Sagot :

Monicapantaleonidn
Example 1: Solve the following system by substitutionSolution:Step 1: Solve one of the equations for either x = or y =2x+3y=5, x+y=5 . We will solve second equation for y , x+y=5 .. y=5-x.Step 2: Substitute the solution from step 1 into the second equation. 2x+3(5-x)=5Step 3: Solve this new equation. 2x+15-3x=5,=, -x+15=5,=,-x=5-15,=, -x=-10, -(-x=-10), x=10..Step 4: Solve for the second variable.y=5-x,,= y=5-10 = ,y=-5
 solution is: (x, y) = (10, -5)