Question

Expand (a/3+b/4) 3 -(a/3-b/4) 3

Answer 1

= a/3×3 + b/4 ×3 - a/3 ×3 +b/4×3

= a + 3b/4 -a + 3b/4

= 3b/4 + 3b/4

= 6b/4

= 3b/2