If the human heart beats an average of 68 beats in a minute, how many times will it beat in 84 minutes?
А
5,712
B 5,612
152
5,702

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

is there a question here?

step-by-step explanation:

it is a horizontal line.

96 cm is the answer.