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125- (7 x 9 + 3 x 9): a - (10 x 10+5) = 8x5:4​

Răspuns :

Răspuns:

125-(7×9+3×9):a-(10×10+5)=8×5:4

125-(63+27):a-(100+5)=40:4

125-90:a-105=10

125-90:a=10+105

125-90:a=115

90:a=125-115

90:a=10

a=90:10

a=9