y = 2x-5
4x-y = 7 => y = 4x-7
2x-5 = 4x-7
2x-4x = 5-7
-2x = -2
x = 1
Therefore by substituting: x = 1 and y = -3
Chat with our AI personalities
4xy = 4(3)(-7) = - 84
I assume that the question means 4x-7=2x+5. In that case, the answer x would equal 6.
you need to reorder the problem by manipulating the numbers -2x-7=-x+13 group your variables and constants thus -x-2x=7+13 simplify -3x=20 simplify again x=-20/3
7(3y-2)-(-4y+9)
18m-7+12m