Question

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b) 4×+×=20
c) 2b_6=12
d) 5y=2y+21
e) ​

Answer 1

Respuesta:

B)

$4x + x = 20 \\ 5x = 20 \\ x = 20 \div 5 \\ x = 4$

C)

$2b - 6 = 12 \\ 2b = 12 + 6 \\ 2b = 18 \\ b = 18 \div 2 \\ b = 9$

D

$5y = 2y + 21 \\ 5y - 2y = 21 \\ 3y = 21 \\ y = 21 \div 3 \\ y = 7$