Question

afla numerele necunoscute​

Answer 1

a) 25+a÷(24×24)=39

25+a÷576=39

a=576×39-25

a=22464-25

a=22439

b)52×5+b=124×3+ 25×4

110+b= 372+100

110+b=472

b=472-110

b=362

c)20+3×12+c=148

20+36+c=148

56+c= 148

c=148-56

c=92

d) d-2×( 480×2-90÷10)+5=75

d-2×(960-9)+5=75

d-2×951+5=75

d-1902=75

d=1902+75

d=1979