Barry’s mountain bike weighs 6 pounds more than andy’s.

if their bikes weigh 42 pounds altogether, how much does barry’s bike weigh?

if we let a represent the weight in pounds of andys bike then a+6 will represent the weight in pounds of barry's bike

a+(a+6)=42

solve for a.

(a.) 18

(b.) 24

(c.) 6

(d.) 40

A

Step-by-step explanation:

a+a+6=42

2a+6=42

subtract 6 on both sides

2a=36

divide 2 on both sides in order to be left with the value of a

a=18

24 pounds.

Step-by-step explanation:

a + (a + 6) = 42

a + a + 6 = 42

2a + 6 = 42

2a + 6 - 6 = 42 - 6

2a = 36

a = 36/2

a = 18.

So Barry's bike weighs 18 + 6 = 24 pounds.

21

step-by-step explanation: