Find the sum. Write your answer in simplest form. 7/10 + 1/4

1 1/20
4/7
9/10
19/20

19/20

Step-by-step explanation:

7/10+1/4

LCM of 10 and 4 is 20,

denominator is 20

10 x 2 is 20 and 4 x 5 is 20

so we have to do 7 x 2 and 1 x 5

14/20 + 5/20 = 19/20

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10