exam Maths Puzzle Numerical Ability

i dont understand this problem at all! please help me! log7(bottom of the g)49=x

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exam Other Question

Please help me solve this problem. it says solve 3(x-1)-2(2x+5)=-(3x-3) i need help to understand these problems the steps they are odd problems therefore the answers are in the back but i do not understand how to get to them.

directions: sketch the