Question

1) ENCONTRE O VALOR DA INCÓGNITA EM CADA EQUAÇÃO:
a) x + 17 = 99;
b) m -11 = 67;
c) 5y + 20 = 40;
d) 9p + 18 = 45;
e) 100 x + 100 = 300;
) t- 34 = 29;
g) 2x + 125 = 275;
h) 2y + 8 = 12;​

Answer 1

Explicação passo-a-passo:

A)

x + 17 = 99 => x = 99 - 17 => x = 82

B)

m - 11 = 67 => m = 67 + 11 => m = 78

C)

5y + 20 = 40 => 5y = 40 - 20 => 5y = 20

y = 20/5 => y = 4

D)

9p + 18 = 45 => 9p = 45 - 18 => 9p = 27

p = 27/9 => p = 3

E)

100x + 100 = 300 => 100x = 300 - 100 => 100x = 200 => x = 200/100 => x = 2

F)

t - 34 = 29 => t = 29 + 34 => t = 63

G)

2x + 125 = 275 => 2x = 275 - 125 => 2x = 150 =>

x = 150/2 => x = 75

H)

2y + 8 = 12 => 2y = 12 - 8 => 2y = 4 => y = 4/2

y = 2