SAT Shortcut

追加: 2026-05-19

[00:00:00]If you're taking the SAT, you have to know this shortcut. If 4x + 3y is 26 and that equation, what is x? Well, easy. x, well, there's one here and one here. Do we just isolate x? Maybe start with the first equation. 4x + 3y = 26. [music] Subtract the 3y, so 4x = 26 - 3y. Then divide by 4.

[00:00:24]Doesn't look like any of our answer choices. [music] There's There's got to be a better way. Two equations, that's just a system of equations. So, stack them up like pancakes. Thank you. Notice [clears throat] anything? Look, if we add both equations, the y's cancel out.

[00:00:38]It's called elimination. So, 5x = 30 and x = [music] 6. Fits A. Want more SAT hacks? Click the video below.