19*70 = (20 - 1)*70 = 20*70 - 1*70 = 1400 - 70 = 1330
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10+9x70
An expression equal to 15 + 35, using distributive property, is 5(3 + 7). Under distributive property, 5*3=15 and 5*7=35.
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The property used to rewrite 9x2 + 9x3 is the Distributive Property. Using the Distributive Property the expression can be rewritten as 9x2 + 9x2 + 9x2 or 27x2.
the answer is 30