Răspuns:
x=(2,1-1,19)÷4+45
x=(21/10- 119/100):4 +45
x= (210/100- 119/100)×1/4+45
x= 91/100×1/4+45
x= 91/400+45
x= 91/400+ 18000/400
x= 18091/400
x= 45,2275
y=(2,3+15)×12,5÷(2,05-1,25)
y=( 23/10+15)×125/10: (205/100-
125/100)
y=( 23/10+150/10)×125/10: 80/100
y= 173/10×125/10×100/80
y= 173/10× 25/2×5/4
y= 4325/16
y= 270,3125
Explicație pas cu pas:
