Question

asutorrrrrrrrrrrrr!!!!!!!

Answer 1

1.
X:10+300=400
X:10=400-300
X:10=100
=> X= 100x10=1000
2.
(35+X)x10-25=325
(35+X)x10=325+25
(35+X)x10=350
35+X=350÷10
35+X=35
=> X=35-35=0
3.
(X-25)÷5+90=100
(X-25)÷5=100-90
(X-25)÷5=10
X-25=10x5
X-25=50
=> X= 50+25=75
4.
(1200-X)÷10+90=100
(1200-X):10=100-90
(1200-X)÷10=10
1200-X=10x10
1200-X=100
=> X=1200-100=1100
5.
500÷X+(300÷10-20)=60
500÷X+(30-20)=60
500÷X+10=60
500÷X=60-10
500÷X=50
=> X=500÷50=10
6.
(30x10)-(4X+50x2)=100
300-(4X+100)=100
4X+100=300-100
4X+100=200
4X=200-100
4X=100
=> X=100÷4=25
Am incercat sa explic cat mai clar. Sper ca te ajuta :)