![]() Suppose a car travels at a speed of ?50? mph for ?125? miles, then speeds up and travels at a new constant speed for another ?153? miles. ?-28V_2? is being subtracted, so add ?28V_2? to both sides.ĭivide both sides by ?28? because division undoes multiplication. Solve by working backwards from the order of operations. Simplify the left side using the order of operations. ![]() Start by plugging in what you do know (use parentheses when plugging numbers in). If the original pressure is ?1.4? and the original volume is ?210?, and if the new pressure is ?28?, what is the new volume? In chemistry we learn that the pressure and volume of a gas are related according to the equation ?P_1 V_1-P_2 V_2=0? where ?P_1? and ?V_1? are the original pressure and volume, and ?P_2? and ?V_2? are the new pressure and volume. Example problem for solving an equation that includes subscripts
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