Question

1)50-x=402)7x=210÷3​

Answer 1

1)50-x=40

1)-х=40-50

2)-х=-10

х=10

2)7x=210÷3

1)210:3

2)=70

3)7х=70

х=70:7

х=10

Answer 2

Let's solve each equation one by one:

1. 50 - x = 40

To solve this equation for x, you'll want to isolate x on one side of the equation. Start by subtracting 50 from both sides:

50 - x - 50 = 40 - 50

This simplifies to:

-x = -10

Now, to isolate x, you can multiply both sides by -1 to make x positive:

(-1) * (-x) = (-1) * (-10)

x = 10

So the solution to the first equation is x = 10.

2. 7x = 210 ÷ 3

To solve this equation for x, you'll want to isolate x. Start by dividing both sides by 7:

(7x) / 7 = (210 ÷ 3) / 7

This simplifies to:

x = 30 / 7

You can leave the answer as a fraction or convert it to a decimal:

x = 4.2857 (rounded to 4 decimal places)

So the solution to the second equation is either x = 30/7 or x ≈ 4.2857.