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方程式...

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方程式: b ×45%=36 7(d-6.8)=10.5 55% ×(n-6)=27.5 (q-6.7) ×3.8=8.36 2.55u+8.44=88.51 (w+1.6) ÷12%=15 (f-7.5)×25%=18 步驟+答案 please!

最佳解答:

b ×45%=36 b=36X100/45 b=80 7(d-6.8)=10.5 d-6.8=1.5 d=8.3 55% ×(n-6)=27.5 n-6=50 n=56 (q-6.7) ×3.8=8.36 q-6.7=2.2 q=8.9 2.55u+8.44=88.51 2.55u=80.07 u=31.4 (w+1.6) ÷12%=15 w+1.6=1.8 W=0.2 (f-7.5)×25%=18 f-7.5=72 f=79.5

其他解答:

Q1 bX45%=36 b=36÷45% b=80 Q2 7(d-6.8)=10.5 7d-47.6=10.5 7d=10.5+47.6 7d=58.1 d=8.3 Q3 55%X(n-6)=27.5 0.55n-3.3=27.5 0.55n=27.5+3.3 0.55n=30.8 55n=3080 Both sides X100 n=56 Both sides ÷55 Q4 (q-6.7)X3.8=8.36 3.8q-25.46=8.36 3.8q=8.36+25.46 3.8q=33.82 q=8.9 Both sides ÷3.8 Q5 2.55u+8.44=88.51 2.55u=88.51-8.44 2.55u=80.07 u=31.4 Both sides ÷2.55 Q6 (w+1.6)÷12%=15 w+1.6=15X12% w+1.6=1.8 w=1.8-1.6 w=0.2 Q7 (f-7.5)X25%=18 0.25f-1.875=18 0.25f=18+1.875 0.25f=19.875 25f=1987.5 Both sides X100 f=79.5 Both sides ÷25 All of the answer are write in full steps.|||||b ×45%=36 0.45b=36 b=36 / 0.45 b=80 7(d-6.8)=10.5 d-6.8=1.5 d=8.3 55% ×(n-6)=27.5 n-6=27.5 / 55% n-6=50 n=56 (q-6.7) ×3.8=8.36 q-6.7 = 8.36 / 3.8 q-6.7 = 2.2 q = 8.9 2.55u+8.44=88.51 2.55u = 88.51 - 8.44 2.55u = 80.07 u= 31.4 (w+1.6) ÷12%=15 w+16 = 15 x 12% w+16 = 1.8 w = -14.2 (f-7.5)×25%=18 f-7.5 = 18 / 25% f-7.5 = 72 f = 79.5
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