Question

8у – 345 = 455 630 : (150 – x) = 70

Answer 1

345+455=800
800*8=100
У=100

630:70=90
150-90=60
Х=60

Answer 2

To solve the system of equations:

1. 8y - 345 = 455
2. 630 / (150 - x) = 70

We can first solve each equation individually.

1. 8y - 345 = 455

Add 345 to both sides of the equation:

8y = 455 + 345 8y = 800

Now, divide both sides by 8 to isolate y:

y = 800 / 8 y = 100

So, the solution to the first equation is y = 100.

Now, let's solve the second equation:

2. 630 / (150 - x) = 70

First, simplify the left side by multiplying both sides by (150 - x) to get rid of the fraction:

630 = 70(150 - x)

Now, divide both sides by 70:

630 / 70 = 150 - x

9 = 150 - x

To isolate x, subtract 150 from both sides:

-141 = -x

Now, multiply both sides by -1 to solve for x:

x = 141

So, the solution to the second equation is x = 141.

Therefore, the solution to the system of equations is:

y = 100 x = 141