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2x3 + 4 = 17 2x3 = 13 x3 = 13 / 2 x = (13 / 2)1/3 x = 521/3 / 2
4 equals 2x2, 6 equals 2x3
The equation is 2(x) +3= 9. X would equal 3. The equation would now look like this, 2x3+3=9.
If x = -7, then x3 = -343 so that 2x3 = -686 y = 2 then 15 y = 30 So 2x3 + 15y = -686 + 30 = -656
5-2x3=9