Question

Are he two expression equivalent if x=5. 7x+3x. 9x+5

Answer 1

Yes

Steps:

1) plug in 5 into the first equation:

7 • 5 = 35 + (3 • 5)= 35 + 15 = 50

2) plug in 5 into the second equation:

9 • 5 = 45 • 5 = 50

3) Compare:

50 = 50

Answer 2

yes, the two expressions are equivalent when x = 5

Explanation:

7(5)=35

3(5)=15

35+15=50

9(5)=45

45+5=50