Answer:
LCM = 20
Step-by-step explanation:
You need to make everything into 20. Luckily, 4X5 is 20 and vise versa.
8x + y - z
You can tell because each term is separated by an operator such as +, -, *, or /
Answer:
x=5
Step-by-step explanation:
x+7=12
x=12-7
x=5
81 because 81 is a perfect square and 27 times 3 =81