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Answer:
b = -3
Step-by-step explanation:
3.2b + 10 = -1.7b - 4.7
add 1.7b to each side
3.2b+1.7b + 10 = -1.7b+1.7b - 4.7
4.9b +10 = -4.7
Subtract 10 from each side
4.9b +10-10 = -4.7-10
4.9b = -14.7
Divide each side by 4.9
4.9/4.9 = -14.7/4.9
b = -3