18 is 40% of what number?

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What is the value of x in the equation 6(x + 1) – 5x = 8 + 2(x – 1)?

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil