a=-2
4b=-2 --> b=-1/2
c=8
(-2)(-1/2)(8)(3)= 24
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Given a value of x, find the value for -3x + 2
2xy=2*30*2=120
x = -2
press 6 abc 9 + 3abc 2 and you will get your answer
If a = -15, b = 5 and c = -2 a - b - c = -15 - 5 - (-2) = -20 + 2 = -18