Question

ecuaciones:
5x=2.15

3x+4=22

(2x+4):2=5

Answer 1

a)

$5x = 2.15 \\ x = 2.15 \div 5 \\ x = 0.43$

b)

$3x + 4 = 22 \\ 3x = 22 - 4 \\ 3x = 18 \\ x = 18 \div 3 \\ x = 6$

c)

$(2x + 4) \div 2 = 5 \\ 2x \div 2 + 4 \div 2 = 5 \\ x + 2 = 5 \\ x = 5 -2 \\ x = 3$


espero haberte ayudado