Question 14
Find $x$:
$(x+2)-(2x+3)+(3x+4)-(4x+5)+\cdots+(19x+20)-(20x+21)=100$.
$(x+2)-(2x+3)+(3x+4)-(4x+5)+\cdots+(19x+20)-(20x+21)=100$.
VTMO 2026 - Grade 6 - Semifinal - SET 6 - Self-study Question 14
VTMO · VTMO 2026 - Grade 6 - Semifinal - SET 6 - Self-study