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D05 Math
Question 46
2021 April(D05) Math Question 46
Algebraic & Function Expressions
- Systems of Equations
Solving pairs of equations
Choice G
A
+
B
=
20
A+B=20
A
+
B
=
20
4
A
+
3
B
=
3.15
×
20
=
63
4A+3B=3.15\times20=63
4
A
+
3
B
=
3.15
×
20
=
63
∴
A
=
3
\therefore A=3
∴
A
=
3
Skills you are tested for:
Solving pairs of equations
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