Answer:
11)<em>(-1)</em>
<em>12)1.7</em>
Step-by-step explanation:
11)y+z/x
(-3)+(-2)/5
(-5)/5
<em> (-1)</em>
12)x-5z/y
5+5(-2)/(-3)
5+(-10)/(-3)
(-5)/(-3)
1.666
<em> 1.7</em>
<em></em>
<em>Hope this helps you</em>
<em>If you have any question just ask me</em>
Answer:
21
Step-by-step explanation:
I shall change the pictures to letters
a + a + b = 40 --(1)
b - c = 7 --(2)
c + a = 19 --(3)
a - c + b = ?
From (1):
2a + b = 40
b = 40 - 2a --(4)
From (2):
b = 7 + c --(5)
Sub (4) into (5):
40 - 2a = 7 + c
c = 33 - 2a --(6)
Sub (6) into (3):
33 - 2a + a = 19
a = 14
Sub a = 14 into (4) and (6):
b = 40 - 2(14) = 12
c = 33 - 2(14) = 5
therefore, a - c + b = 14 - 5 + 12 = 21
Topic: simultaneous equations
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Answer:
adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.
Step-by-step explanation:
please mark brainleist
Answer:subtraction property
Step-by-step explanation:
Two a negative and a negative makes a positive so it would be x+6=18 so u do the opposite on both sides so it would be subtraction
Theirs your answer 661.091628959
