Răspuns:
[tex] {7}^{30} \div {49}^{15} + 7 + {7}^{1} \times [2401 \div {7}^{3} \div (7 \times {7}^{2} - {336}^{1} )] = \\ {7}^{30} \div ( {7}^{2} ) {}^{15} + 7 + 7 \times [ {7}^{4} \div {7}^{3} \div ( {7}^{3} - 336)] = \\ {7}^{30} \div {7}^{30} + 7 + 7 \times [ {7}^{4} \div {7}^{3} \div (343 - 336)] = \\ {7}^{0} + 7 + 7 \times ( {7}^{4} \div {7}^{3} \div 7) = \\ 1 + 7 + 7 \times (7 \div 7) = \\ 1 + 7 + 7 \times 1 = \\ 1 + 7 + 7 = \\ 8 + 7 = 15[/tex]
sper că te-am ajutat!
