Question

5(2x+6)=-4(-5 – 2x) + 3x​

Answer 1

`x=10`

Explanation:

`5(2x+6)=-4(-5 -2x) + 3x`

`\longrightarrow` Use the distributive property to multiply 5 by 2x+6, and -4 by -5 - 2x.

`10x+30=20+8x+3x`

`\longrightarrow` Combin 5x and 2x to get 11x:-

`10x+30=20+11x`

`\longrightarrow` Subtract 11x from both sides:-

`10x+30-11x=20`

`\longrightarrow` Combine 10x and -11x to get -x:-

`-x+30=20`

`\longrightarrow` Subtract 30 from both sides:-

`x=20-30`

`\longrightarrow` Subtract 30 from 20 to get -10:-

`-x=-10`

`\longrightarrow` Multiply both sides by -1:-

`x=10`

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Answer 2

x = 10

Explanation:

10x+30 = 20+8x+3x

30 = 20+x

x = 10