Question

( 2x + 13 ) : 5 = 17

360 : ( 11x - 7 ) = 90

30 : ( 3x - 7 ) = 15

Answer 1

\(\left(2x+13\right):5=17\)

\(\Rightarrow2x+13=17.5\)

\(\Rightarrow2x+13=85\)

\(\Rightarrow2x=85-13\)

\(\Rightarrow2x=72\Rightarrow x=\frac{72}{2}=36\)

\(360:\left(11x-7\right)=90\)

\(11x-7=\frac{360}{90}\)

\(\Rightarrow11x-7=4\)

\(\Rightarrow11x=4+7=11\)

\(\Rightarrow x=\frac{11}{11}=1\)

\(30:\left(3x-7\right)=15\)

\(\Rightarrow3x-7=\frac{30}{15}=2\)

\(\Rightarrow3x=2+7=9\)

\(\Rightarrow x=\frac{9}{3}=3\)

Answer 2

a,\(\left(2x+13\right):5=17\)

\(2x+13=17.5\)

\(2x=72\)

\(x=72:2\)

\(x=36\)

b,\(360:\left(11x-7\right)=90\)

\(11x-7=4\)

\(11x=11\)

\(x=1\)

c,\(30:\left(3x-7\right)=15\)

\(3x-7=2\)

\(3x=9\)

\(x=3\)

Answer 3

(2x + 13): 5 =17

2x + 13=85

2x=72

x=36

360 :(11x -7)=90

11x - 7=4

11x=11

x=1

30 : (3x - 7)=15

3x-7=2

3x=9

x=3

Answer 4

`(2x + 13) : 5 = 17`

`=> 2x + 13 = 85`

`=> 2x = 72`

`=> x = 36`

`360 : (11x - 7) = 90`

`=> 11x - 7 = 4`

`=> 11x = 11`

`=> x = 1`

`30 : (3x - 7)  = 15`

`=> 3x - 7 = 2`

`=> 3x = 9`

`=> x = 3`