Answer:
1. C
2. B
3. C
4. A
5. D
Step-by-step explanation:
The least common multiple is the smallest multiple of the given numbers that is a common multiple for all the numbers being compared.
We have to divide the numbers by numbers that are divisible
15,12
Divide both by 3 -15/3 =5. 12/3 =4
5 and 4 aren’t divisible by any common numbers, we take them as it is
L.C.M = 3*4*5 = 60
Answer is 60
Answer: y=(-3x+7)/2
Isolate y.
2y= -3x+7
y= (-3+7)/2
Answer: x=(-2y+7)/3
Isolate x
3x=-2y+7
x=(-2y+7)/3
Answer: 6x+4y=14
Idk if that counts but multiply the whole equation by 2.
The answer to this is -11/12