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schepotkina [342]
3 years ago
14

Solve the equation. 30- (x + 5) = 7x-7 The solution is x =

Mathematics
2 answers:
lord [1]3 years ago
7 0

Answer:

- 30(x + 5) = 7x - 7 \\  - 30x - 150 = 7x - 7 \\ 7x + 30x =  - 150 + 7 \\ 37x =  - 143 \\ x =    \frac{ - 143}{37}  \\ x =  - 3.864

________o____o_____

30–(x+5)=7x-7

30 – x–5 =7x -7

7x+x = 30-5+7

8x = 32

x= 32/8

x=4

I hope I helped you^_^

Elan Coil [88]3 years ago
3 0

X=4
30-x+5=7x-7
25-x=7x-7
-x+25=7x-7
-x=7x-32
(subtract 7x from both sides)
-8x=-32
(divide by -8) (remember negative times negative= positive)
X=4
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