(643-y)*2=1512:4 и (300:х+19)*32=992

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вопрос

First, distribute the 2 on the left side:

1286 - 2y = 1512

Next, subtract 1286 from both sides:

-2y = 226

Now, divide by -2 to solve for y:

y = -113

Therefore, the value of y is -113.

First, divide by 32 on both sides:

300/x + 19 = 31

Next, subtract 19 from both sides:

300/x = 12

Now, multiply by x on both sides:

300 = 12x

Divide by 12 to solve for x:

x = 25

Therefore, the value of x is 25.