Question

Ajudaaa estou sem tempo para fazer scrr​

Answer 1

Resposta:

a) x - 5 = - 7

x = -7 +5

x = -2

b) 10x = 18 +9x +9

10x -9x = 18+9

x = 27

c) 2(x+3) -5 = 30 - 5

2x +6 -5 = 25

2x = 25 -6+5

2x= 19+5

2x = 24

x= 24/2

x =12

d) 8-2(x+5) = 5

8 - 2x -10 = 5

-2x = 5 -8+10

-2x = -3+10

x = -7/2

e) -18 = 2(x+7)

-18 = 2x +14

-2x = 14 + 18

x = -32/2

x = -16

Answer 2

a) -2

b) 20

c) 12

d) -7/2

e) -16

$\sf {\Huge ——————— }$

a) $\sf \green{ x } \red{-5 } \orange{ =-7} \\ \sf \purple{x = } \pink{ -7 } \blue{ +5 } \\ \sf \red{x} \orange{=-2}$

b) $\sf \green{ 10x } \red{= 18 } \orange{ +9x } \purple{ +2 }\\ \sf \pink{ 10x } \blue{ -9x } \red{=18}\orange{+2}\\ \sf \green{x} \pink{=20}$

c) $\sf \green{ 2 } \red{ (x+3) } \orange{ -5 } \purple{ =30} \pink{-5 } \\ \sf \blue{2x } \red{+6} \orange{-5} \green{=25}\\ \sf \pink{2x } \purple{=25}\red{-6}\orange{+5}\\ \sf\blue{2x}\green{= 24} \\ \sf\pink{x}\purple{=\frac{24}{2}}\\ \sf \red{x} \orange{=12}$

d) $\sf \green{ 8 } \red{ -2 } \orange{ (x+5)} \purple{ =5} \\ \sf \pink{ 8 } \blue{ -2x } \red{-10} \orange{=5} \\ \sf \pink{-2x} \purple{=5} \green{-8} \blue{+10} \\ \sf\red{-2x}\orange{=7} \\ \sf\pink{x} \purple{= \frac{7}{-2}}$

e) $\sf \green{-18 } \red{ = 2 } \orange{ (x+7) } \\ \sf \purple{ -18 } \pink{ =2x } \blue{ +14 }\\ \sf \green{-2x } \red{= 18 } \orange{ +14} \\ \sf \purple{-2x } \pink{= 32 } \\ \sf\blue{x } \green{ =\frac{32}{-2}}\\ \sf \red{ x } \orange{ =-16 } \purple{ } \pink{ } \blue{ } \green{ } \red{ } \orange{ } \purple{ } \pink{ } \blue{ } \green{ } \red{ } \orange{ } \purple{ } \pink{ } \blue{ } \green{ } \red{ } \orange{ } \purple{ } \pink{ } \blue{ } \green{ } \red{ } \orange{ } \purple{ } \pink{ } \blue{ } \green{ } \red{ } \orange{ } \purple{ } \pink{ } \blue{ }$