Question

Ayuda con esto porfa
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$5x-3=4x+7$
$\frac{x}{3} +8=12$
$6x+7=49$

Answer 1

5x - 3 = 4x + 7

5x = 4x + 7 + 3

5x = 4x + 10

5x − 4x = 10

x = 10

x/3 + 8 = 12

x/3 = 12 - 8

x/3 = 4

x = 4 × 3

x = 12

6x + 7 = 49

6x = 49 - 7

6x = 42

x = 42/6

x = 7