If y=3x+4 and y=2x+8 find the value of both x and y

Question

If y=3x+4 and y=2x+8 find the value of both x and y

in progress 0
Dâu 5 months 2021-08-27T22:40:00+00:00 1 Answers 2 views 0

Answers ( )

    0
    2021-08-27T22:41:38+00:00

    Answer:

    x=4, y=16

    Step-by-step explanation:

    Since y is alone on one side of both equations, that means that the equations are equal.

    2x+8=3x+4\\

    Put like terms on the same side of the equations. I put the numbers on the left and the Xs on the right. To do this subtract 4 from both sides. You will get:

    2x+4=3x

    Next, I subtracted the 2x from both sides;

    4=x

    For y, just substitute the x in the equation with 4. Will work for either equation.

    y= 3(4)+4\\y= 12+4\\y=16

    Or

    y=2x+8\\y=2(4)+8\\y=8+8\\y=16

    Therefore, y=16

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )