15x+40=115
15x+40-40=115-40
15x=75
15/15 x=75/15
x= 5
Answer:
Together, the boys ate 5/6 of the sandwich, leaving 1/6 of the sandwich left.
Answer:
1. Not accounting for the difference in the base of the exponent when applying the quotient rule.
2. Not subtracting the exponents of the denominator from the exponent of the numerator when applying the quotient rule.
The answer is D because you can multiply the second equation by -4
