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

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

$\\ \sf\hookrightarrow x=\dfrac{b}{a}$

Correct

Done

Answer 2

Answer:

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