Mathematics for IGCSE & O level - Equations (Section 3 - No. 20)
What should be the next step after expanding the brackets in an equation such as 3(x + 2) = 15?
Isolate the x terms
Add like terms
Add 6 to both sides
Subtract 6 from both sides
説明
After expanding to get 3x + 6 = 15, to isolate x, you subtract 6 from both sides.