Step-by-step explanation:
5x + 7 = 42
5x = 42 - 7
5x = 35
x = 35/5
= 7
Answer:
you didnt attach anything
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
Adding 6 to both sides and taking the square root, remember that x can be the poitivie and negative root
x^2-6=0
add 6
x^2=6
squaer root both sides
x=√6
x=+√6 and -√6