7x/x-4 * x/x+7
mutiply the numerators together
(7x)(x)= 7x^ 2
mutiply the denominators together
(x-4)(x+7)
(x)(x)(7)(x)= x^2+7x
(-4)(x)(-4)(7)= -4x-28
x^2+7x-4x-28
x^2+3x-28
Answer:
7x^2/x^ 2+3x-28
Approximately 186in^3 was released from the water balloon
Step-by-step explanation:
2(7x +8)=12
2(7x +8)/2 =12/2
7x +8 =6
7x=6-8
7x = -2
x= -2/7
