How do you solve an equation like

2+6+7+20x

Maria drove from Los Angeles (elevation 330 feet) to Death Valley (elevation - 282 feet). What is the difference in elevation between Los Angeles and Death Valley?

What is 9 divided by 75 and what's the remainder

What's an expression that's equivalent to 3+2 (5x) - 7?

Erik drove 439.92 miles on 15.6 gallons of gas. To the nearest hundredth, how many miles could he drive on 39.7 gallons of gas?

80,801 rounded to the nearest ten thousand

Which equation should be used to solve 81 + * = 108

Nadia started at 19.26 feet below sea level and then changed her altitude by climbing a total of 5,437.8 feet up from her initial position. What was Nadia's altitude at the end of her climb

A toy manufacturer needs a piece of plastic in the shape of a right triangle with the longer leg 6 cm more than the shorter leg and the hypotenuse 12 cm more than the shorter leg. How long should the sides of the triangle be?

To celebrate, Clare went out to eat with her 3 friends. Their meal, including tax, was $75. If they left a tip, what is their total bill including the tip.

2x + 2/3 equals 1/3 what is X