Quote:
Originally Posted by Redway
1. 3 + (7-2) = 3 + 5 = 8
2. 17 - (14 X 3) = 17 - 42 = - 25
3. 11 + (2 X 7) = 11 + 14 = 25
4. 100 - (11 x 8) X 4 = 100 - 88 = 12; 12 X 4 = 48
5. 27 X 3 - 6 = 54 - 6 = 48
Solve the following equations:
1. 4 x - 7 = 27
Add seven to both sides, and 4x = 34.
Divide by four to get x on its own, and x = 8.5 (you can do this using an algorithm).
2. 3x - 27 = 45
Add 27 to both sides and 3x = 72.
Divide by 3 to get x on its own, and x = 24 (feel free to check this by multiplying 24 by 3  ).
That's secondary school maths that most people can't remember how to do. |
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On number 4, wouldn't you do 88x4 before taking it away from 100?
And, on number 5, doesn't 27x3 = 81?
I'm not trying to correct you or anything, I'm just wondering where I've gone wrong.