Question

VA ROG , E FOARTE URGENT !
Verificarea tuturor formulelor invatate [(6+2)+2+1+1]=12 formule
Aflati necunoscutele din :
X x 12 = 96
X : 83 = 5
144 :X = 13 r 1
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1. A + B = 75
2. A - B = 15
3. A + B = 75
4. A = 4 x B
5. A - B = 72
6. A = 7 x B

Answer 1

[(6+2)+2+1+1]=12. (8+2+1+1)=12. (10+1+1)=12. 12=12. 1.Afla necunoscutele din: a).X×12=96. X=96:12. X=8. b).X:83=5. X=83×5. X=415. c).144:X=13 r 1. X=(144-1):13. X=143:13. X=11. 2.Afla pe A si B. 1.A+B=75. A=43. B=32. 43+32=75. 2.A-B=15. A=35. B=20. 35-20=15. 3.A+B=75. A=20. B=55. 20+55=75. 4.A=4×B. A=32. B=32:4. B=8. 32=8×4. 5.A-B=72. A=75. B=3. 75-3=72. 6.A=7×B. A=49. B=49:7. B=7.