Question

Exercitiul 1
Va rooog!

Answer 1

7-[5200:13-5*(360-2x]:20=2 5200:13-5*(360-2x]:20= 7-2 400-5×(360-2X) = 5×20 400-5×(360-2X) = 100 5×(360-2X) = 400-100 5×(360-2X) = 300 360-2X = 300:5 360-2X = 60 2X = 360-60 2X = 300 X = 300:2 X = 150

Answer 2

7-[5200:13-5×(360-2x)]:20=2
-[400-5×(360-2x)]:20=2-7
[400-5×(360-2x)]:20=5
400-5×(360-2x)=5×20
-5×(360-2x)=100-400
5×(360-2x)=300
360-2x=300:5
360-2x=60
2x=360-60
2x=300
x=300:2
x=150