Also I am having a hard timewith this !!!
Use the properties of addition and multiplication to complete the statement.
2 • (7 + 8) = 2 • ____ + 2 • 8
2007-09-20 18:58:22 · 4 answers · asked by MMM Ice Cream 1 in Education & Reference ➔ Homework Help
7 you dummy
2007-09-20 20:28:58 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Look at all the common factors of the numbers to find the GCF.
28 = 2*2*7
70 = 2*5*7
126 = 2*7*3*3
What do they ALL have? Each number has a 2 and a 7. So the GCF = 2 * 7 = 14
..........................
2 • (7 + 8) = 2 • ____ + 2 • 8
This is the distributive property.
7 goes in the blank.
2007-09-20 19:13:47 · answer #2 · answered by ecolink 7 · 0⤊ 0⤋
To find common factor, divide by numbers which are divisible for all the number until you cannot go on anymore. Then multiply the factors that have been used.
28 | 70 | 126 --- 2
14 | 35 | 63 --- 7
2 | 5 | 9
GCF for 28, 70, 126 will be 2 * 7 = 14
2 • (7 + 8) = 2 • 7 + 2 • 8
2007-09-20 19:11:09 · answer #3 · answered by tancy2411 4 · 0⤊ 0⤋
I think 7 is the gcf because when you divide 14 into 147 it doesn't come out evenly while 7 does.
2016-05-19 22:56:11 · answer #4 · answered by Anonymous · 0⤊ 0⤋