Help plz why is nobody helping me i asked this question too much times 1. 1 3/4 + 1/6 + = 7 1/2

2. 8 4/5 - 2/3 - = 3/ 1/10

6 5/12 and 5 1/30

Step-by-step explanation:

Just simplify both sides of the equation.

1 3/4 + 1/6 +    x      = 7 1/2 ---> 1 11/12 +   x   =7 1/2

then subtract the 1 11/12 from both sides

x = 6 5/12

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15