Subtract (5x + 3) from (9x – 7).

a. 4x – 4
b. 4x + 10
c. 4x – 10
d. –4x + 10

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Solve 2 - 3 cos x = 5 + 3 cos x for 0° ≤ x ≤ 180° a. 150° b. 30° c. 60° d. 120°

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2