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Afla valoarea necunoscuta :
x-(9x7)+(6x8)+245=865-(8x9)-(81:9)


Răspuns :

x-(9×7)+(6×8)+245=865-(8×9)-(81÷9)=
x-63+48+245=865-72-9=
x-230=784
x=784+230
x=1014
x-63+48+245=865-72-9
x-63+48+245=793-9
x-63+48+245=784
x-63+48=539
x-63=539-48
x-63=491
x=554