-3x + 4y = 12 Temporary value of y: 4y = 3x + 12 y = (3x + 12) / 4 Substituting y: -3x + 4 [(3x+12) / 4] = 12 -3x + 12x + 48 = 12 -3x + 12x = 12 - 48 9x = 12 - 48 9x = -36 x = -36 / 9 x = -4 Subtituting x to get the final value of y: -3(-4) + 4y = 12 12 + 4y = 12 4y = 12 - 12 4y = 0 y = 0 Final answer: x = -4 y = 0 Check: -3x + 4y = 12 -3(-4) + 4(0) = 12 12 + 0 = 12 12 = 12 Solution 2: -3x + 4y = 12 Temporay value of x: 3x = 4y - 12 x = (4y - 12) / 3 Substituting x to get the value of y: 3[(4y - 12) / 3] + 4y = 12 12y - 36 + 4y = 12 16y = 12 + 36 16y = 48 y = 48 / 16 y = 3 Substituting y to get the value of x: -3x + 4(3) = 12 -3x + 12 = 12 -3x = 12 - 12 x = 0 Final Answer: x = 0 y = 3 Check: -3(0) + 4(3) = 12 12 = 12
when y = 3, 8y-4y = 4y = 4*3 = 12
3x - 4y = -1
7x+4y = 39 2x+4y = 14 Subtract the equations in order to eliminate y: 5x = 25 Divide both sides by 5 to find the value of x: x = 5 Substitute the value of x into the original equations to find the value of y: Therefore: x = 5 and y = 1
6y=4y+8 take away 4y from each side- have to keep it balanced then it is 2y=8 divide each side by 2 to get one y y=4 if you don't get it, ask me. my username is Confuzzled88
-3x + 4y = 12 Temporary value of y: 4y = 3x + 12 y = (3x + 12) / 4 Substituting y: -3x + 4 [(3x+12) / 4] = 12 -3x + 12x + 48 = 12 -3x + 12x = 12 - 48 9x = 12 - 48 9x = -36 x = -36 / 9 x = -4 Subtituting x to get the final value of y: -3(-4) + 4y = 12 12 + 4y = 12 4y = 12 - 12 4y = 0 y = 0 Final answer: x = -4 y = 0 Check: -3x + 4y = 12 -3(-4) + 4(0) = 12 12 + 0 = 12 12 = 12 Solution 2: -3x + 4y = 12 Temporay value of x: 3x = 4y - 12 x = (4y - 12) / 3 Substituting x to get the value of y: 3[(4y - 12) / 3] + 4y = 12 12y - 36 + 4y = 12 16y = 12 + 36 16y = 48 y = 48 / 16 y = 3 Substituting y to get the value of x: -3x + 4(3) = 12 -3x + 12 = 12 -3x = 12 - 12 x = 0 Final Answer: x = 0 y = 3 Check: -3(0) + 4(3) = 12 12 = 12
when y = 3, 8y-4y = 4y = 4*3 = 12
You can set this problem up like this: 48/4 = y/11 Cross multiply 48*11 = 4y 528 = 4y 528 divided by 4 = 132 So when w equals 11 y equals 132
That depends what the value of y is.
If you mean: -9x+4y = 8 and -3x+y = 4 then the solutions are x = -8/3 and y = -4
The value of y in the equation -2x plus 4y -4, is 1 plus x/2.
x + y = 10. Substitute x = 4y into this equation: 4y + y = 10 Combine like ters: 5y = 10 Divide through by 5: y = 2 Substitute this value of y in x = 4y ie x = 4*2 = 8.
10
oranges x apples y 5x+2y=72 1x+4y=48make it so that either the x value or the y value are the same2(5x+2y)=2(72)1x+4y=48here you can see how the y's are now the same10x+4y=1441x+4y=48subtract the bottom equation from the top one9x=96divide9x/9=96/9x=10 2/3substitute 10 2/3 for x in either of the original equations1x+4y=481(10 2/3)+4y=4810 2/3+4y=48subtract4y=48-10 2/34y=37 1/3divide4y/4=(37 1/3)/4y=9 1/3therefor, x is 10 2/3 y is 9 1/3money-wise, the oranges (x) are $10.67 and the apples (y) are $9.33
For 4y+228 = 352 the value of y works out as 31.
-y + -4y = -5y
3x - 4y = -1