Mathematics for IGCSE & O level - Equations (Section 6 - No. 47)
In the equation 2x + 3 = 7, what operation should be performed first to isolate the term with 'x'?
Multiply both sides by 2
Subtract 3 from both sides
Divide both sides by 2
Add 3 to both sides
解释
To isolate '2x', the inverse operation of adding 3 is subtracting 3 from both sides.