Which expression is equivalent to 36 + 42 ? Using the Greatest Common Factor (GCF)?

2 (18+ 21)
6 (6 +42)
3 (12+14)
6 (6 + 7)

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.