Question

реши уравнение x+(90+30)=180 2)(x+90)+30=180 3) (x+60)*5=500 4) 5*x+300=500

Answer 1

1)x+120=180
x=60
2)x+120=180
x=60
3)5x+300=500
5x=200
x=40
4)5x=200
x=40

Answer 2

1)x+120=180
x=60
2)x+120=180
x=60
3)5x+300=500
5x=200
x=40
4)5x=200
x=40