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0 . 3 7 5
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DRAW A LINE ON THE FIRST PLUS SIGN THAT TURNS IT INTO A 4! THE EQUATION THEN BECOMES TRUE: 545+5=550. YOU COULD ALSO CHANGE THE EQUAL SYMBOL TO A CROSSED OUT EQUAL SYMBOL WHICH MEANS "NOT EQUAL TO" THE GREEN TRIANGLE HAS DIMENSIONS 2 X 5 AND GRADIENT 2 / 5 = 0.4 THE RED TRIANGLE HAS DIMENSIONS 3 X 8 AND GRADIENT 3 / 8 = 0.375 HENCE THE GRADIENT OF THE GREEN TRIANGLE IS GREATER THAN THAT OF THE RED TRIANGLE FIRST CUT THE CAKE INTO 4 EQUAL PIECES WITH 2 CUTS ON THE TOP - ONE HORIZONTALLY DOWN THE CENTER OF THE CAKE AND THE OTHER VERTICALLY DOWN THE CENTER OF THE CAKE LIKE A CROSS ('+'). NEXT IS TO CUT THE 4 PIECES INTO HALF WITH A HORIZONTAL FINAL CUT ON THE SIDE. THIS WILL GIVE YOU 4 PIECES OF CAKE ON TOP AND 4 PIECES OF CAKE UNDERNEATH THE SUM OF THE NUMBERS ON THE WATCH FACE IS 78. IF THE TWO LINES CROSS, THERE MUST BE 4 EQUAL PARTS, BUT 78 IS NOT DIVISIBLE BY 4. THEN THE LINES DO NOT CROSS, GIVING THREE PARTS WITH THE SUM OF 26 EACH. ONCE YOU SEE THE PAIRS ON THE FACE THAT ADD TO 13(12+1,11+2, AND SO FAR) THE ANSWER WILL BE EASY TO FIND