Question

Determine whether or not the given value is a solution. 1. -5x + 4 = -1; x = -1 2.4x3 = -7; x = -1 3. 3y -4 = 5; y = // 4.-2y + 7 = 12; y = -1/2 5.3a-6 = 18 - a; a = -3 6. 5(2t - 1) = 2 = t; t = 2 7. ax = b = 0; x = b/a 8. ax + b = 2b; x = b/a​

Answer 1

#1

`\\ \sf\hookrightarrow -5x+4=-1`

`\\ \sf\hookrightarrow -5x=-5`

`\\ \sf\hookrightarrow x=1`

Incorrect

#2

`\\ \sf\hookrightarrow 4x-3=-7`

`\\ \sf\hookrightarrow 4x=-4`

`\\ \sf\hookrightarrow x=-1`

Correct

#3

`\\ \sf\hookrightarrow 3y-4=5`

`\\ \sf\hookrightarrow 3y=9`

`\\ \sf\hookrightarrow y=3`

Ans not given

#4

`\\ \sf\hookrightarrow -2y+7=12`

`\\ \sf\hookrightarrow -2y=5`

`\\ \sf\hookrightarrow y=-5/2`

Incorrect

#5

`\\ \sf\hookrightarrow 3a-6=18-a`

`\\ \sf\hookrightarrow 4a=24`

`\\ \sf\hookrightarrow a=6`

Incorrect

#6

`\\ \sf\hookrightarrow 5(2t-1)=2`

`\\ \sf\hookrightarrow 10t=7`

`\\ \sf\hookrightarrow t=7/10`

Incorrect

#7

`\\ \sf\hookrightarrow ax-b=0`

`\\ \sf\hookrightarrow x=(b)/(a)`

Correct

Done