Question

vreau sa rezolvati ​

Answer 1

Răspuns:

Explicație pas cu pas:

a) 3x + 7 = -2x - 8 => 3x+2x=-8-7 => 5x = -15 => x = -3

b) 9x - $\frac{1}{7}$ = $\frac{10}{14}$ + 4x => 9x-4x=$\frac{10}{14}$ + $\frac{1}{7}$ => 5x = $\frac{10}{14}$ + $\frac{2}{14}$ => 5x = $\frac{12}{14}$ => 5x = $\frac{6}{7}$ => x = $\frac{6}{35}$

c) ($\frac{2}{3}$ - $\frac{1}{2}$)x = -4 =>( $\frac{4}{6}$ - $\frac{3}{6}$)x = -4 => $\frac{1}{6}$x = -4 => x = - $\frac{1}{24}$

d) $\frac{x}{2}$ + 1 + $\frac{x}{3}$ = 8 => $\frac{x}{2}$ + $\frac{x}{3}$ = 8-1 => $\frac{3x}{6}$ + $\frac{2x}{6}$ = 7 => $\frac{5x}{6}$ = 7

e) 2 + 3(x+4) = x+5(x-5) => 2+3x +12 = x+5x-15 => 3x-5x -x = -15 - 2-12 => -3x = -29 => x = $\frac{29}{3}$

f)