Question

afla numerele necunoscute.

b. x - 3.197 = 5.142
x - 8.917 = 14.320

c. 9.820 - x = 1.874
5.002 - x = 2.153

Answer 1

x-3197=5142
x=3197+5142
x=8339
v:8339-3197=5142

x-8917=14320
x=14320+8917
x=23237
v:23237-8917=14320

9820-x=1874
x=9820-1874
x=7946
v:9820-7946=1874

5002-x=2153
x=5002-2153
x=2849
v:5002-2849=2153

Answer 2

x-3.197=5.142/+3.197
x=8.339
Proba: 8.339-3.197=5.142

x-8.917=14.320/+8.917
x=23.237
Proba: 23.237-8.917=14.320

9.820-x=1,874
x=9.820-1.874
x=7.946
Proba: 9.820-7.946=1.874

5.002-x=2.153
x=5.002-2.153
x=849
Proba: 5.002-849=2.153