Question

Resolva as equações: a) x + 8 = 10
b) y – 10 = 20
c) 15 + x = 30
d) 140 + x = 340
e) 2x = 50
f) 3x = 9

Answer 1

Resposta:

$a)x + 8 = 10$

$x = 10 - 8$

$x = 2$

$b)y - 10 = 20$

$y = 20 + 10$

$y = 30$

$c)15 + x = 30$

$x = 30 - 15$

$x = 15$

$d)140 + x = 340$

$x = 340 - 140$

$x = 200$

$e)2x = 50$

$x = 50 \div 2$

$x = 25$

$f)3x = 9$

$x = 9 \div 3$

$x = 3$