Question

Resolva as equações: A)3. (x + 2) =18 B)4. (x - 1 ) =16 C)5. (x + 1) =25 D)6. (x - 2) =24 E)2. (x + 4) =44 F)7. (x - 1) =49 G)3. (x - 6) =33
Rápido pfv, preciso entregar hoje!

Answer 1

a) $3(x + 2) = 18$

$3x + 6 = 18$

$3x = 18 - 6$

$3x = 12$

$x = \frac{12}{3}$

$x = 4.$

b) $4(x - 1) = 16$

$4x - 4 = 16$

$4x = 16 + 4$

$4x = 20$

$x = \frac{20}{4}$

$x = 5.$

c) $5(x + 1) = 25$

$5x + 5 = 25$

$5x = 25 - 5$

$5x = 20$

$x = \frac{20}{5}$

$x = 4.$

d) $6(x - 2) = 24$

$6x - 12 = 24$

$6x = 24 + 12$

$6x = 36$

$x = \frac{36}{6}$

$x = 6.$

e) $2(x + 4) = 44$

$2x + 8 = 44$

$2x = 44 - 8$

$2x = 36$

$x = \frac{36}{2}$

$x = 18.$

f) $7(x - 1) = 49$

$7x - 7 = 49$

$7x = 49 - 7$

$7x = 42$

$x = \frac{42}{7}$

$x = 6.$

g) $3(x - 6) = 33$

$3x - 18 = 33$

$3x = 33 + 18$

$3x = 51$

$x = \frac{51}{3}$

$x = 17.$