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13) 17–4x[6–3x (m:4–15)]+95 = 100​

Răspuns :

Răspuns:

17-4x[6-3x(m:4-15)]+95=100

17-4x(6-3x(1/4:m)+95=100

17-4x(6-3/4m+45)+95=100

17-4x(51-3/4m)+95=100

17-204+3m+95=100

-92+3m=100

3m=100+92

3m=192

m=192:3

m=64