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a) x+5×(33+128)=895; b) x-53×(49-3×12)=996;

Răspuns :

a) 

x+5 × (33+128)=895
x+ 5 × 161 = 895
x+805=895
x=895-805
x=90

b)

x-53 × (49-3×12)=996
x- 53× (46-36)=996
x-53×13=996
x-689=996
x=996+689
x=1685
A) x+5*161=895
    x+805=895
    x=895-805
    x=90

B) x-53*(49-36)=996
     x-53*13=996
     x-689=996
     x=1685