Since 12=10+2
We first multiply 7 by 10 to get 70
and then 7 by 2 to get 14
adding these gives us our final answer: 84
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2:7::12:x Divide the '12' by '2' and multiply by '7' Hence 12 x 7 / 2 6 x 7 = 42 Hence 2:7::12:42
7 x 5 = 35 7 + 5 = 12
You have : -------------- ( x + 1 ) / ( x ) = ( -7 ) / ( x - 12 ) Multiply both sides by ( x ) ( x - 12 ) and get : ( x + 1 ) ( x - 12 ) = ( -7 ) ( x ) x^2 - 12x + x - 12 = -7x x^2 - 4x - 12 = 0 Factor the above : ( x - 6 ) ( x + 2 ) = 0 There are two roots : x = 6 <------------------ x = -2 <---------------
You would solve this like an algebratic equation:12 100---- = -----7 xThen you'd cross multiply..12(x) = 100(7)12x=700Then you'd divide..12x=700--- -----12 12x=58.3(The three is repeating)
If that's 7/8 x 2/3, the answer is 14/24 or 7/12