Answer: 3/10
Explanation:
2/5 + __ = 7/10 fraction 2/5 + 3/10 = 7/10
0.4 + __ = 0.7 decimals 0.4 + 0.3 = 0.7
0.7 - 0.4 = 0.3
Answer:
3/10
2/5 + x = 7/10
x = 7/10 - 2/5
x = 7/10 - 4/10
x = 3/10
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