Question

punctele c,d,e,g
Va rog...repede​

Answer 1

$- 6x = - 2\times {3}^{3} \\ - 6x = - 2 \times 27 \\ - 6x = - 54 \\ 6x = 54 \\ x = 9$

$- {2}^{2} \times {7}^{3} = {7}^{2} \times x \\ - 4 \times {7}^{3} = {7}^{2} \times x \\ - 4 \times {7}^{3 - 2} = x \\ - 4 \times 7 = x \\ - 28 = x$

$- {2}^{2} \times 3 = - 6x \\ - 4 \times 3 = - 6x \\ - 12 = - 6x \\ 12 = 6x \\ x = 2$

$(79 - 84)x = - 10 \\ - 5 \times x = - 10 \\ 5x = 10 \\ x = 2$