Question

B- 4×+3=15
C- 2a+6=14
D- b2+4=9
E- 5y-1=19
F- 3y/2-2=5​

Answer 1

B= X=2 4.2+3=15
C= a=4 2.4+6=14

Answer 2

Resposta:

$B) 4x+3=15 \\ 4x = 15 - 3 \\ 4x = 12 \\ x = \frac{12}{4} \\ x = 3 \\ \\ \\ \\ \\ C) 2a+6=14 \\ 2a = 14 - 6 \\ 2a = 8 \\ a = \frac{8}{2} \\ a = 4 \\ \\ \\ \\ D) b2+4=9 \\ {b}^{2} = 9 - 4 \\ {b}^{2} = 5 \\ b = + - \sqrt{5} \\ \\ \\ \\ E) 5y-1=19 \\ 5y = 19 + 1 \\ 5y = 20 \\ y = \frac{20}{5} \\ y = 4 \\ \\ \\ \\ F) \frac{3y}{2} - 2 = 5 \\ \frac{3y}{2} - \frac{2}{1} = 5 \\ \frac{3y - 2 \times 2}{2} =5 \\ 3y - 4 = 5 \times 2 \\ 3y = 10 + 4 \\ 3y = 14 \\ y = \frac{14}{3}$