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Earn +20 ptsQ: What is 5x(3x 2)-8x-7x?
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What is x plus 2-5x3x-23?
It is -15x2 + x - 21.
What is the answer to 3x plus 13 equals 69 - 5x?
3x + 13 = 69 - 5x3x + 5x = 69 - 138x = 56x = 56/8x = 7Check:3(7) + 13 = 69 - 5(7)21 + 13 = 69 - 3534 = 34
What is order pair of 5x plus y equals 5 and 3x plus 2y equals 3?
5x + y = 5 .... Eq.1 we can write it in another way ... y = 5 - 5x3x + 2y = 3 .... Eq.2Put the value of Y in Eq.23x + 2(5 - 5x) = 33x + 10 - 10x = 33x - 10x = 3 - 10- 7x = -7x = -7/-7 ............. X = 1to find the value of y, put the value of x in Eq.1y= 5 - 5xy= 5 - 5(1)y= 5 - 5 ............. Y = Zero
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