The question is worded amibiguously. Do you mean 3(7b)-2, or 3(7b-2)?
3(7b) - 2:
2 = 21b
2/21 = b
3(7b -2):
21b - 6 = 0.
21b = 6
b = 6/21 = 2/7.
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minus 6
Two plus 3 minus 2 times 1 squared plus 4 times 16 squared minus 4 times 2 is equal to 1,019.
x5
4 times 2 minus 3 divided by 3 is equal to 8 minus 3 divided by 3 which is equal to 5 divided by 3 which gives you 1 and 2 thirds.
180 - (23 x 2 x 3) - 15 = 27