4(5x-20)=-20
20x-80=-20
20x=60
x=3
Answer:
you have to set it up step by step
Step-by-step explanation:
hope this helps you get started
Answer:
Yes it is a solution
Step-by-step explanation:
2*0=0
3*2=6
Answer:
3/4
Step-by-step explanation:
1/3 + 1/4 + 1/6
notice that the denominators consists of the numbers 3, 4 and 6 and that the lowest common multiple for all 3 numbers is 12, hence all these fractions can be expressed with a denominator of 12
i.e
1/3 = 4/12
1/4 = 3/12
1/6 = 2/12
hence,
1/3 + 1/4 + 1/6
= 4/12 + 3/12 + 2/12
= (4+3+2) / 12
= 9/12 (simply)
= 3/4
