Question

1).7x+3=30-2x 2).3(x-2)-(9x+3)=6 3).(7x+1)-(9x+3)=6 4).0.2(7-2y)=2,3-0.3(y-6)

Answer 1

СМОТРИИИИИИИТЕЕЕ ФОТООО

Answer 2

Извени что карандашон, но мне так было удобно ; 3

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Answer 3

It looks like you've provided four mathematical equations. Do you need help solving these equations for their respective variables? Let's go through each one step by step:

1. $7x + 3 = 30 - 2x$ To solve for $x$, combine like terms and isolate $x$ on one side: $7x + 2x = 30 - 3$
   $9x = 27$
   $x = 27 / 9$
   $x = 3$

2. $3(x - 2) - (9x + 3) = 6$ First, distribute the $3$ on the left side of the equation: $3x - 6 - 9x - 3 = 6$
   Combine like terms: $-6x - 9 = 6$
   Add $9$ to both sides: $-6x = 15$
   Divide by $-6$: $x = -15 / -6$
   $x = 2.5$

3. $(7x + 1) - (9x + 3) = 6$ Distribute the negative sign on the right side of the equation: $7x + 1 - 9x - 3 = 6$
   Combine like terms: $-2x - 2 = 6$
   Add $2$ to both sides: $-2x = 8$
   Divide by $-2$: $x = 8 / -2$
   $x = -4$

4. $0.2(7 - 2y) = 2.3 - 0.3(y - 6)$ Distribute on both sides: $1.4 - 0.4y = 2.3 - 0.3y + 1.8$
   Combine like terms: $-0.4y + 0.3y = 2.3 + 1.8 - 1.4$
   $-0.1y = 2.7 - 1.4$
   $-0.1y = 1.3$
   Divide by $-0.1$: $y = 1.3 / -0.1$
   $y = -13$

So, the solutions are:

1. $x = 3$
2. $x = 2.5$
3. $x = -4$
4. $y = -13$