Question

1) (x+15)x10-100:5+90=100
2) [(x+15)x10-100]:5+90=100

Answer 1

1) (x+15)•10-100:5+90 = 100
10x+150-20+90 = 100
10x+130+90 = 100
10x+220 = 100
10x = 100-220
10x = -120
x = -120/10
x = -12.

2) [(x+15)•10-100]:5+90 = 100
(10x+150-100):5+90 = 100
(10x+50):5+90 = 100
2x+10+90 = 100
2x+100 = 100
2x = 100-100
2x = 0
x = 0/2
x = 0.





J'espère aidé :)

Answer 2

(x+15) ×10 -100:5=10
(x+15) ×10 -20=10
(x+15)×10=30
x+15=300
x=300-15
x=285

[(x+15)×10-100]:5+90=100
[(x+15)×10-100]:5=10
(x+15)×10-100=50
(x+15)×10=150
x+15=1500
x=1485