So say for example u have -7 - (-5), think of subtracting integers as adding the opposite, so ur adding the opposite of -5, the opposite of -5 is 5, so ur adding -7 and 5= -2
another one: -15 - (-18)
again, adding the opposite. -15 plus positive 18= 3
Step-by-step explanation:
The value of x is 7......
Answer:
all real numbers.
Step-by-step explanation:
First, distribute 3 to all terms within the parenthesis:
3(x + 4) = 3(x) + 3(4) = 3x + 12
3x + 12 = 3x + 12
Because both sides are the same, your answer for x is "all real numbers".
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B. 45 items x $2 = 90$. 90 + the 25 from the beginning = 115
2y = 12 - 5x
y = 6 - 5/2x
2 = -5/2(-3) + b
2 = 15/2 + b
2 - 15/2 = b
b = -11/2
y = 15/2x - 11/2
