Question

pls repede dau coroana​

Answer 1

a)(420×5+31)-20×25=

1 2 4 3

(2100+31)-20×25=

2131-500=

1631

b)1950-(27×25+40:4)=

4 1 3 2

1950-(675+40:4)=

1950-(675+10)=

1950-685=

1265

c)39×400+[23+2×(23-2×3)]=

5 6 4 3 2 1

39×400+[23+2×(23-6)]=

39×400+(23+2×17)=

39×400+(23+34)=

39×400+57=

15600

d)[(470×50-2×190)+70:10×19]-52=

1 3 2 6 4 5 7

[(23500-2×190)+70:10×19]-52=

[(23500-380)+70:10×19]-52=

(23120+70:10×19)-52=

(23120+7×19)-52=

(23120+133)-52=

23253-52=

23201