Answer:
8
Step-by-step explanation:
51 + 4x + 7 = 90 - combine like terms
58 + 4x = 90 - subtract 58 from each side
4x = 32 - divide both sides by 4
x = 8
Answer:A
Step-by-step explanation:
Answer:
8
Step-by-step explanation:

× 8
= 3
In algebra:
× y = 3
y = 3 ÷ 
y = 8
Answer:10.5 ml
Step-by-step explanation:do 75/50=1.5
Do 7 times 2.6 and get 7+2.5=10.5 miles