Question

5(х-4)-3х= -2(4у+1)+8у= -(с+7)+3с= 6(-4м-3)+18=

Answer 1

1)5х-20-3х
5х-3х
2х-20
х=20:2
х=10
2)
-8у+2+8у
-8|8у
у=2
3)
-с-7+3с
2с-7
с=7:2
с=3.5

Answer 2

1)=5х-20-3х=2х-20

2)=-8у-2+8у=-2

3)=-с-7+3с=2с-7

4)=-24м-18+18=-24м

кажется вот так

Answer 3

Let's solve each equation step-by-step:

1. 5(x - 4) - 3x = 0 Expand the expression: 5x - 20 - 3x = 0 Combine like terms: 2x - 20 = 0 Now, isolate x by moving the constant term to the other side of the equation: 2x = 20 Finally, solve for x by dividing both sides by 2: x = 20 / 2 x = 10

2. -2(4y + 1) + 8y = 0 Expand the expression: -8y - 2 + 8y = 0 The -8y and +8y cancel each other out, and we're left with: -2 = 0 This equation is inconsistent because there is no value of y that satisfies it. There is no solution for y in this case.

3. -(c + 7) + 3c = 0 Distribute the negative sign:

• c - 7 + 3c = 0 Combine like terms: 2c - 7 = 0 Isolate c by moving the constant term to the other side: 2c = 7 Divide both sides by 2 to solve for c: c = 7 / 2 c = 3.5

4. 6(-4m - 3) + 18 = 0 Expand the expression: -24m - 18 + 18 = 0 The -18 and +18 cancel each other out, and we're left with: -24m = 0 Divide both sides by -24 to solve for m: m = 0

So, the solutions for each equation are:

1. x = 10
2. No solution for y.
3. c = 3.5
4. m = 0