[新しいコレクション] 2x-y=6 x-y=2 by substitution method 173513-2x-y=6 x-y=2 by substitution method

2x y = 6 y = 3x 4 2x 3x 4 = 6 5x = 6 − 4 5x = 2

2x-y=6 x-y=2 by substitution method-Algebra 2 Solve by Substitution x 2y z = 14 y = z 1 x = 3z 6 Math A particular Chemistry book costs $6 less than a particular Physics book Two such Chemistry books and three such Physics books cost a total of $123 Construct two simultaneous equations and solve them using the substitution method Show your working I MathsThis will give us an equation with just one variable, 'x' Adding y to both sides gives us 2x=y2 Then subtracting 2 from both sides gives us y=2x2 Subtracting 2x from both sides gives us y=2x6 Since we have both equations set equal to 'y', we can plug one equation into the other