Ex 7:
[tex]a)397 + 42 \times m = 859[/tex]
[tex]42 \times m = 859 - 397[/tex]
[tex]42 \times m = 462[/tex]
[tex]x = 462 \div 42 = 11[/tex]
[tex]b)947 - 124 \div n = 943[/tex]
[tex]124 \div n = 974 - 943[/tex]
[tex]124 \div n = 31[/tex]
[tex]n = 124 \div 31 = 4[/tex]
[tex]c)40 \times p - 500 = 300[/tex]
[tex]40 \times p = 300 + 500 = 800[/tex]
[tex]p = 800 \div 40 = 20[/tex]
Ex 8
[tex]360 - (2 \times a + 64) = 278[/tex]
[tex]2 \times a + 64 = 360 - 278 = 82[/tex]
[tex]2 \times a = 82 - 64 = 18[/tex]
[tex]a = 18 \div 2 = 9[/tex]
Sper ca ți am fost de folos!
