Q. Solve these pairs of simultaneous equations: 2x+y=1 and y=x−5
Express y in terms of x: Step Title: Express y from the first equationConcise Step Description: Express y in terms of x using the first equation.Step Calculation: From the equation 2x+y=1, we can isolate y by subtracting 2x from both sides, giving us y=1−2x.Step Output: y=1−2x
Substitute y in equation: Step Title: Substitute y in the second equationConcise Step Description: Substitute the expression for y from the first equation into the second equation.Step Calculation: Replace y in the second equation y=x−5 with the expression from the first equation, giving us 1−2x=x−5.Step Output: 1−2x=x−5
Solve for x: Step Title: Solve for xConcise Step Description: Solve the resulting equation for x.Step Calculation: Add 2x to both sides and add 5 to both sides to get 1+5=x+2x, which simplifies to 6=3x. Divide both sides by 3 to find x=2.Step Output: x=2
Solve for y: Step Title: Solve for y using the value of x Concise Step Description: Substitute the value of x back into the expression for y to find the value of y. Step Calculation: Substitute x=2 into y=1−2x to get y=1−2(2), which simplifies to y=1−4, giving us y0. Step Output: y0