Question

A}2x+6/9=16 b}4x-7/7=31

Answer 1

Ответ:

все сделано и объяснено на рисунке

Answer 2

Ответ:

a)23/3 b)8

Пошаговое объяснение:

2x=16-6/9

2x=(144-6)/9

2x=138/9

2x=46/3

x=1/2(умножить) 46/3

x=23/3

4x-1=31

4x=31+1

4x=32

x=32/4

x=8

Answer 3

To solve these equations for x, we need to isolate x on one side of the equation. Let's solve them step by step:

a) $\frac{2x+6}{9} = 16$

Step 1: Eliminate the fraction by multiplying both sides of the equation by 9 to get rid of the denominator:

$9 \times \frac{2x+6}{9} = 9 \times 16$

$2x + 6 = 144$

Step 2: Now, isolate x by subtracting 6 from both sides:

$2x = 144 - 6$

$2x = 138$

Step 3: Finally, divide both sides by 2 to solve for x:

$x = \frac{138}{2}$

$x = 69$

So, the solution to equation a) is $x = 69$.

b) $\frac{4x-7}{7} = 31$

Step 1: Eliminate the fraction by multiplying both sides of the equation by 7:

$7 \times \frac{4x-7}{7} = 7 \times 31$

$4x - 7 = 217$

Step 2: Now, isolate x by adding 7 to both sides:

$4x = 217 + 7$

$4x = 224$

Step 3: Finally, divide both sides by 4 to solve for x:

$x = \frac{224}{4}$

$x = 56$

So, the solution to equation b) is $x = 56$.