In exercises 1-4 find each sum or difference. 1/2+3/4= 1/6+3/8= 7/8-5/12=

1.  L.C.M of the denominators is 4.

So, multiply the numerator and the denominator of the first fraction by 2.

Hence, .

2.  L.C.M of the denominators is 24.

So, multiply the numerator and the denominator of the first fraction by 4 and those of the second fraction by 3.

Hence, .

3.  L.C.M of the denominators is 24.

So, multiply the numerator and the denominator of the first fraction by 3 and those of the second fraction by 2.

Hence, .

it is x=-4

step-by-step explanation:

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6