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Q: What is 2d plus 1 equals 29 equal?

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2d + 7 = 9 2d = 2 d = 1

I--2a+b=2c+2d II--2a+b=c+2d III--a+2b=3d * Here if we perform (I)-(II), we get, c=0 * Using the c we can prove b=0 using (I)-(III). * Now replace 'b' & 'c' as 0 in (I), then we get a=d. Email me at yash2008gates@gmail.com for any queries. I will be very thankful to receive your queries.

To keep it balanced, whatever you do to one side of the equals, do to the other: 2d + 7 = 9 ⇒ 2d + 7 - 7 = 9 - 7 ⇒ 2d = 2 ⇒ 2d ÷ 2 = 2 ÷ 2 ⇒ d = 1

12

2d + 25 = 55Therefore 55 - 25 = 2dTherefore, 2d = 30d = 30/2Therefore, d = 15

-7d = 50 + 2d -9d = 50 d = -50/9 Or about -5.6

3d + 8 = 2d - 7 3d -2d = -8 - 7 1d = - 15 d = -15

3d+8=2d-7 3d+8-8=2d-7-8 (substract 8 on both side) 3d=2d-15 3d-2d=2d-2d-15 (substract 2d on both side) d=-15

22d - 1

Solving for d: d = -4.7 satisfies the equation.

(-70-2+9)d + (39-75+1) = -63d -35

2d shapes that do not have equal sides do not usually have special names.

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