Question

1)Calculeaza: a)(9x9-6x6-a)+(13+28:4)=5x10+3 b) (99-b-3x8)+2x6:2=8x2+5x10 c) (6x4:3+c):7=16:4 d) (d-5x6+10x5):5+4x8=42 e) (96-3x4-5x8)+e-9x7=13 va rog ajutati-ma

Answer 1

A)(81-36-a)+(13+7)=50+3=>45-a+20=53=>65-a=53=>-a=-12/x(-1)=>a=12 B)(99-b-24)+(12:2)=16+50=>75-b+6=66=>75-b=60=>-b=15/x(-1)=>b=15 C)24:3+c=4=>8+c=4=>c=-4 D)(d-30+50):5+24=42=>d-4+24=42=>d+20=42=>d=20 E)96-12-40+e-63=13=>84-40+e-63=13=>44+e-63=13=>-19+e=13=>e=32.....