Question

solve the expressions:3x/4+2/7=5/4​

Answer 1

Answer:

$\frac{3x}{4} + \frac{2}{7} = \frac{5}{4} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \frac{3x}{4} = \frac{5}{4} - \frac{2}{7} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \frac{3x}{4} = \frac{35 - 8}{28} \\ \: \: \: \: \: \: \: \: \: \: \frac{3x}{4} = \frac{27}{28} \\ \: \: \: \: \: \: \: 28(3x) = 4(27) \\ \: \: \: \: \: \: \: \: \: 84x = 108 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: x = \frac{108}{84} \\ \: \: \: \: \: \: \: \: \: \: x = \frac{9}{7}$

Answer 2

Answer:

=9/7

Step-by-step explanation:

$\frac{3x}{4} + \frac{2}{7} = \frac{5}{4} \\ \frac{21x + 8}{28} = \frac{5}{7} \\ 4 \times (21x + 8) = 28 \times 5 \\ 84x + 32 = 140 \\ 84x = 140 - 32 \\ x = \frac{108}{84} = \frac{9}{7}$