so what you would do is 20 x 12 and see what you get and the subtract it from 900 and then see what number would take you to 900
Answer:
142
Step-by-step explanation:
3.2-5.7=-2.5 so its have to be a negative because a smaller number subtract a bigger number have to be equal to a negative number.
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➷ 3x + 1 = 511
Subtract 1 from both sides:
3x = 510
Divide both sides by 3:
x = 170
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