2(x + 2) = x - 4
2x + 4 = x - 4
2x - x = -4 - 4
x = -8
Solution: x = -8
Multiply 300 times 5. you know that 3 times 5 equals 15. 15 plus 2 zeros is 1500. 1500 is the estimated answer
-7(z - 6) = -70
-7z + 42 = -70
- 42 -42
-7z = -112
-7z/-7 = -112/-7
z = 16
Answer: z = 16
