Question

3 supra 4 + 4 supra 21 × 42 supra 4
Va rog ajutatima!!

Answer 1

$\frac{3}{4} + \frac{4}{21}* \frac{42}{4} =\frac{3}{4}+ \frac{4*42}{21*4} =\frac{3}{4}+ \frac{168}{84}=\frac{3}{4}+ \frac{8}{4} =\frac{3+8}{4}= \frac{11}{4}=2 \frac{3}{4} sau 2.75$

Answer 2

3/4 + 4/21 x 42/4 = 3/4 + 1/21 x 42/1 = 3/4 + 1/1 x 2/1 = 3/4 + 2 = 3/4 + 8/4 = 11/4