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Earn +20 ptsQ: If x equals 2 and y equals 9 then 7x plus 3y equals?
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X plus 7x plus 3y - y?
x+7x+3y-y =8x+2y =2(4x+y)
What is 4x plus 3y equals -2 x-y equals -4?
1. 4x + 3y = -22. x - y = -4Multiplying 2. by 3 gives: (we have done this so that we end up with a -3y)3. 3x - 3y = -121. added to 3. gives: (now, by adding, the 3y & -3y will cancel out)4. 7x = -14 (the 4x + the 3x gives 7x, the y's cancel out, -2 + -12 gives -14)thus x = -14/7x = -2Substituting x = -2 into 1. gives(4 * -2) + 3y = -2-8 + 3y = -23y = -2 + 83y = 6y = 2Thus x = -2 and y = 2.
Simplify 2x plus 6 2y plus 3y?
-4(7x-3y-z)-(-6)(9x-z+2)
7x plus 2 equals 5.6 solve x?
7x + 2 = 5,6
What is x in this equation x plus 7x - 2 plus x plus 7x -2 equals 60?
X=4.2666666666667
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