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15 January, 13:08

What is the vaule of 12 (3x+5x), when x=7

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  1. 15 January, 15:51
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    Fist plug in 7 in to the X values like so 12 (3 (7) + 5 (7)) then solve in side the parenthesis 3*7 = 21 and 5*7=35 then add them 35+21=56 and then you are left with 12 (56) or 12*56 = 672
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