adicao
19+9=
28
346x788
272,648
2/7 x 7/10
1/5
2/2
1
3x+2=17
x=5
12+57
69
246x923=
227,058
1/8 x 1/4
1/32
45/3
15
400,000,000+60,000,000+300,000+60,000+8,000
460,368,000
12+75
87
601x293=
176,093
1/2 x 3/7
3/14
24/2
12
9x+145=400
x=28.33...
105+345,000
445,000
567x388
219996
5/9 x 3/4
3/5
411/3
137
65 x 70
4,550
1,234+2,456
3690
559x370
206,830
3/8 x 10/11
15/44
141/6
23.5
234,567+891,011=
1125578