4x-2(x-a)= 14
x=-2
4x-2(x-a)=14
4*(-2) -2(-2-a)=14
-8+4+2a=14
-4+2a=14
2a=18
a=9
Answer:
A = 21.4 m²
Step-by-step explanation:
A = 2×1.7×2/2 + 2×2×3 + 2×3
= 3.4 + 12 + 6
= 21.4 m²
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