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Q: What is X plus 10 equal to when X equals 3?

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Multiply the first equation by 3 to give 9x + 15y = 21

8x + 3 = 50 8x = 47x = 47/8x= 5 and 7/8ths

I believe the converse is: if 2x equals 6 then x equals 3 inverse: if x doesn't equal 3 then 2x doesn't equal 6 contrapositive: if 2x doesn't equal 6 then x doesn't equal 3

7x + 8 = 10x - 2 ∴ 3x = 10 ∴ x = 10/3

2x + 4 = 10 2x = 10 - 4 = 6 2x = 6 x = 6/2 = 3

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If x = 3, then x + 10 would be 3 + 10, which is 13.

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It equals a simple linear equation in 'y'. Its solution is 7/3 .

6z + 28 = 12z + 10 18 = 6z 3 = z

Look at it this way: If p = 1, then 7p = 7. What plus 7 equals -3? Adding 7 to -10 would equal -3, so all we have to figure out is what times 5 would equal -10. 5 times -2 would equal -10 so q equals -2.

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