A. Evaluate The Following 1. C8,6 2. C7,3+C11,9 3. - Gauthmath

Trang chủ » C(7 3)+c(11 9) » A. Evaluate The Following 1. C8,6 2. C7,3+C11,9 3. - Gauthmath

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Question

Solve the simultaneous equations below using elimination. 2y+x=7 y+x=5SHOW LESS0

Solution

user avatar imageAnswerx=3, y=2ExplanationStep 1: Multiply the second equation by -2. $-2(y+x)=-2*5$ $-2y-2x=-10$ Step 2: Add the modified second equation to the first equation. $2y+x+(-2y-2x)=7+(-10)$ $-x=-3$ Step 3: Multiply the equation by -1. $-1*(-x)=(-1)*(-3)$ $x=3$ Step 4: Substitute x=3 into the second equation. $y+3=5$ $y=2$Click to rate:27.6(58 votes)Search questionBy textBy image/screenshotDrop your file here orClick Hereto upload

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